Fullscreen vs Borderless Windowed vs Windowed: Which Display Mode Actually Gives You More FPS? (2026)

You launch a game, head to the graphics settings, and there it is: Display Mode with three options — Fullscreen, Borderless Windowed, and Windowed. You pick one, maybe the default, and never think about it again. But this single setting can affect your FPS, input lag, frame pacing, and even whether your GPU is truly running at full speed.

The old advice was simple: always use Fullscreen. But Windows 11 has fundamentally changed how display modes work under the hood, and the "always Fullscreen" rule no longer holds for everyone. In 2026, the right choice depends on your hardware, your monitor, and what you're actually doing while gaming.

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TL;DR

• Exclusive Fullscreen gives you the lowest input lag (1-3ms advantage) and avoids the Windows compositor entirely. Best for competitive/esports titles where every millisecond counts.
• Borderless Windowed is now nearly as fast as Fullscreen on Windows 11 thanks to the new flip model compositor. Best for most gamers — especially if you alt-tab, use overlays, stream, or run a second monitor.
• Windowed mode always has the worst performance. Only use it if you genuinely need to resize the game window or run it alongside other applications.
• The FPS difference between Fullscreen and Borderless is typically 0-5% on modern systems. The input lag difference is 1-3ms. If you're not competing at a high level, Borderless Windowed is the more convenient choice with negligible downsides.

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How Each Display Mode Actually Works

To understand the performance differences, you need to know what's happening between your GPU and your monitor in each mode.

Exclusive Fullscreen

In Exclusive Fullscreen, the game takes direct control of the display output. The Windows desktop compositor (DWM — Desktop Window Manager) steps aside. Your GPU sends frames directly to the monitor without any intermediary processing.

This means:

• No compositor overhead. Frames go straight from the GPU to the display. Zero extra processing.
• The game controls refresh rate and resolution directly. It can set the monitor to whatever resolution and refresh rate it wants, independent of your Windows display settings.
• Alt-tabbing is slow. When you switch away, the game has to surrender exclusive display access, the compositor reactivates, and your desktop redraws. This takes 1-5 seconds depending on the game.
• Overlays can break. Some screen capture tools, streaming software, and overlays have compatibility issues with exclusive fullscreen.
• Multi-monitor behavior is worse. Your second monitor may flicker, go black, or change resolution when a game takes exclusive control of your primary display.

Borderless Windowed (Borderless Fullscreen)

Borderless Windowed runs the game in a window that's sized exactly to your screen — it looks fullscreen, but it's still a window managed by DWM. The compositor processes every frame before it reaches the monitor.

On Windows 10, this meant the compositor added a full frame of latency (6-16ms at 60Hz). Borderless Windowed had noticeably higher input lag than Exclusive Fullscreen.

On Windows 11, Microsoft rewrote the compositor to use a flip model presentation by default. Instead of copying and compositing the frame into a shared surface, the compositor can "flip" the game's frame buffer directly to the display — similar to what Exclusive Fullscreen does, but while keeping DWM running. This dramatically reduces the latency penalty.

Key characteristics:

• Fast alt-tabbing. Switch between the game and desktop instantly — no resolution changes, no black screens, no delay.
• Overlays and capture work reliably. Discord, OBS, Xbox Game Bar, and streaming tools all work seamlessly.
• Multi-monitor is seamless. Your second monitor keeps working normally. No flickering, no resolution resets.
• Small latency penalty. Even with Windows 11's improved compositor, there's still a 1-3ms latency overhead compared to Exclusive Fullscreen.
• HDR and VRR compositing. Windows 11 handles HDR tone mapping and Variable Refresh Rate (VRR/G-Sync/FreeSync) through the compositor in Borderless mode.

Windowed

Plain Windowed mode runs the game in a resizable window on your desktop, like any other application. The compositor processes every frame, and the game shares screen real estate with other windows.

• Worst performance of the three modes. The GPU renders at a smaller resolution (unless you manually resize to fill the screen), and the compositor adds overhead.
• Highest input lag. Full compositor pipeline, no flip model optimization.
• Useful for multitasking. If you need to see other applications alongside the game — following a guide, monitoring chat, checking a map — Windowed mode is the only option.
• Not recommended for performance-sensitive gaming. Only use this when convenience outweighs performance.

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Real Performance Differences: FPS and Frame Times

Let's put numbers to the theory. The performance gap between display modes varies by game engine, GPU generation, and Windows version.

FPS Impact

Scenario	Fullscreen FPS	Borderless FPS	Difference
Competitive esports (Valorant, CS2) at 1080p	550+	530+	~3-5%
AAA gaming (Cyberpunk 2077) at 1440p	95	93	~2%
AAA gaming at 4K	62	61	~1-2%
GPU-bound (maxed settings, high resolution)	Baseline	-1-2%	Minimal
CPU-bound (low resolution, high refresh rate)	Baseline	-3-5%	Noticeable

The pattern is clear: the more CPU-bound your scenario, the bigger the Borderless penalty. At 4K where the GPU is the bottleneck, the difference is negligible. At 1080p on a high-refresh monitor where the CPU is working hard to push 300+ FPS, the compositor overhead becomes proportionally more significant.

If you're already CPU bottlenecked, switching from Borderless to Fullscreen is one of the easiest free performance gains you can make.

Input Lag Impact

This is where the real competitive advantage lives.

Display Mode	Typical Input Lag Overhead	Best Case (Windows 11 + VRR)
Exclusive Fullscreen	0ms (baseline)	0ms
Borderless Windowed (Windows 11)	1-3ms	~1ms
Borderless Windowed (Windows 10)	6-16ms	~8ms
Windowed	8-20ms	~10ms

For context: the average human reaction time is around 200ms. A 1-3ms difference is imperceptible to all but the most elite competitive players using specialized measurement tools. A 10-15ms difference (Windows 10 Borderless) is something skilled players can feel, especially in fast-paced shooters.

If you're still on Windows 10 and care about input lag, Exclusive Fullscreen is significantly better. If you're on Windows 11, the gap has narrowed enough that most players won't notice. For a deeper dive on squeezing out every millisecond, see our complete input lag reduction guide.

Frame Pacing

Frame pacing — the consistency of frame delivery times — can be just as important as raw FPS for perceived smoothness. A game running at a "steady" 60 FPS but delivering frames at alternating 8ms/24ms intervals looks choppier than one delivering them at consistent 16ms intervals.

Exclusive Fullscreen generally has the best frame pacing because the game has direct control over when frames are presented. The compositor in Borderless mode can occasionally introduce minor frame-time variations, especially when:

• A notification or overlay pops up
• Your second monitor is playing video content
• Windows is performing background compositing work

If you experience micro-stuttering only in Borderless mode but not in Fullscreen, the compositor is almost certainly the cause.

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How Display Mode Interacts with VRR (G-Sync / FreeSync)

Variable Refresh Rate technology (NVIDIA G-Sync, AMD FreeSync) synchronizes your monitor's refresh rate to your GPU's frame output, eliminating screen tearing without the input lag penalty of V-Sync. But how your display mode interacts with VRR matters.

Exclusive Fullscreen + VRR

VRR works directly between the GPU and the monitor. No intermediary. This is the most straightforward and reliable VRR implementation:

• VRR operates across the monitor's full supported range
• No additional latency from compositor processing
• Best frame pacing within the VRR range

Borderless Windowed + VRR

On Windows 11, VRR works in Borderless Windowed mode — but with caveats:

• You must enable "Variable refresh rate" in Windows Settings > Display > Graphics. It's usually on by default, but check.
• Multi-monitor VRR behavior is tricky. If your second monitor is running at a fixed 60Hz, the compositor may lock your primary monitor's VRR to multiples of 60Hz in some scenarios.
• HDR + VRR in Borderless sometimes causes flickering on certain monitor models. If you experience brightness flickering in Borderless HDR, try Exclusive Fullscreen.

Our VRR Recommendation

If VRR is working well for you in Borderless mode (no flickering, smooth frame delivery), stay with it. If you notice tearing, flickering, or inconsistent VRR behavior, switch to Exclusive Fullscreen to rule out compositor issues. For high refresh rate monitors at 240Hz+, Exclusive Fullscreen gives the most reliable VRR experience.

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When to Use Each Display Mode

Use Exclusive Fullscreen if:

• You play competitive esports titles (Valorant, CS2, Apex Legends, Fortnite) where 1-3ms of input lag matters
• You're CPU-bottlenecked and need every frame
• You're on Windows 10 (the Borderless penalty is much larger)
• You experience flickering or VRR issues in Borderless mode
• You don't need to alt-tab frequently
• You're benchmarking and want the most consistent, lowest-overhead results

Use Borderless Windowed if:

• You play single-player or casual multiplayer games
• You alt-tab frequently (browsing, Discord, second monitor)
• You stream or record gameplay with OBS/Discord
• You use a dual-monitor setup and don't want flickering
• You're on Windows 11 (the performance penalty is minimal)
• You use HDR (Windows 11 handles HDR tone mapping through the compositor, and some games have better HDR in Borderless)

Use Windowed if:

• You're following a guide or tutorial alongside the game
• You need to see other applications while playing (chat, maps, notes)
• You're a developer testing or debugging a game
• Performance is not a concern

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The "Fake Fullscreen" Problem: When Borderless Pretends to Be Fullscreen

Here's something most gamers don't realize: many modern games no longer support true Exclusive Fullscreen. When you select "Fullscreen" in the settings menu, the game actually runs in Borderless Windowed mode with the title bar hidden.

This started with DirectX 12 and Vulkan games. Unlike DirectX 11, which had a clear Exclusive Fullscreen path, DX12 and Vulkan use a "flip model" presentation that works through the compositor by default. Many DX12 games — including Fortnite, Halo Infinite, Starfield, and most Unreal Engine 5 titles — run in what Microsoft calls "fullscreen optimized borderless" regardless of what you select in the menu.

How to check if your game is truly Exclusive Fullscreen:

1. Launch the game in "Fullscreen" mode.
2. Alt-tab to the desktop. If the transition is instant (no black screen, no resolution change), you're in Borderless — not true Exclusive Fullscreen.
3. Alternatively, check if moving your mouse to the edge of the screen on a multi-monitor setup moves it to the second monitor. If yes, it's Borderless.

What this means for you:

If a DX12/Vulkan game is running in fake Fullscreen anyway, there's zero benefit to selecting Fullscreen over Borderless Windowed — you're getting the exact same performance either way. You might as well choose Borderless and enjoy the faster alt-tabbing.

For DX11 games (or games that explicitly support true Exclusive Fullscreen), the Fullscreen option still gives you the latency and performance advantages described above.

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Display Mode and GPU Power States

One often-overlooked interaction: your GPU's power state can be affected by your display mode.

In Exclusive Fullscreen, the GPU knows it has sole control of the display and can run in its highest performance state (P0) continuously. In Borderless Windowed, some GPUs — particularly on multi-monitor setups — can get confused about power states. The GPU might drop to a lower power state (P2 or P8) because the compositor isn't demanding 100% GPU attention continuously.

Symptoms of this issue:

• Lower-than-expected FPS despite low GPU utilization
• GPU clocks not boosting to their rated speeds
• Performance that's worse in Borderless than the expected 2-3% gap

If you're seeing GPU utilization problems specifically in Borderless mode, check your GPU clocks with MSI Afterburner. If clocks are low, try setting your GPU's power management mode to "Prefer Maximum Performance" in the NVIDIA Control Panel or AMD Adrenalin settings. Our GPU driver settings guide covers this in detail.

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Optimizing Your Display Mode for Maximum Performance

Whatever mode you choose, these settings complement it:

1. Enable VRR (G-Sync/FreeSync) — eliminates tearing in both Fullscreen and Borderless. Pair with a frame rate cap 3-5 FPS below your monitor's max refresh rate for the smoothest experience.
2. Disable V-Sync in-game when using VRR. V-Sync + VRR adds unnecessary input lag.
3. Set Windows refresh rate correctly. Right-click desktop > Display Settings > Advanced Display > choose your monitor's highest refresh rate. Some monitors default to 60Hz even if they support 144Hz+.
4. Enable Windows Game Mode. Despite old advice to disable it, Game Mode in Windows 11 prevents background updates and interruptions during gaming. Leave it on.
5. Use NVIDIA Reflex or AMD Anti-Lag in games that support them. These technologies reduce the render queue latency and work in both Fullscreen and Borderless modes — providing a bigger latency reduction (5-15ms) than the display mode choice itself.
6. If streaming: use Borderless Windowed. OBS performs more reliably with Borderless, and the small FPS penalty is offset by fewer capture-related issues.

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The Bottom Line

In 2026, the display mode debate is mostly settled. Windows 11's improved compositor has narrowed the gap between Exclusive Fullscreen and Borderless Windowed to the point where most gamers should use Borderless Windowed for the convenience benefits (instant alt-tab, reliable streaming, clean multi-monitor) at a negligible performance cost.

The exceptions are competitive players who need absolute minimum input lag, anyone still on Windows 10 (where the Borderless penalty is significant), and edge cases with VRR or multi-monitor issues. For those users, Exclusive Fullscreen remains the better choice.

And if you're seeing larger-than-expected performance differences between display modes, the problem might not be the mode itself — it could be a sign of a deeper bottleneck in your system. Run your build through our free PC bottleneck analyzer to find out what's actually holding your FPS back.

Analyze your PC for free — it takes about 30 seconds.

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FAQ

Does Fullscreen give more FPS than Borderless?

Yes, but typically only 1-5% more on Windows 11. The gap is largest in CPU-bound scenarios (low resolution, high refresh rate). At 1440p and 4K, the difference is often within margin of error.

Is Borderless Windowed bad for competitive gaming?

On Windows 11, the input lag penalty is only 1-3ms — imperceptible for most players. On Windows 10, the penalty is 8-16ms, which competitive players will notice. If you're playing at a high level, use Exclusive Fullscreen or upgrade to Windows 11.

Why does my game say Fullscreen but alt-tabs instantly?

Your game is likely running in "fullscreen optimized borderless" mode, which is common in DX12 and Vulkan games. The Fullscreen label in the menu is misleading — you're actually in Borderless. There's nothing wrong; this is by design.

Does display mode affect G-Sync or FreeSync?

VRR works in both Fullscreen and Borderless Windowed on Windows 11 (make sure it's enabled in Windows Settings). Fullscreen gives more reliable VRR behavior. If you experience flickering in Borderless, switch to Fullscreen.

Should I use Windowed mode for gaming?

Only if you specifically need to see other applications alongside the game. Windowed mode has the worst performance and highest input lag of all three options. Use Borderless Windowed instead if you need multitasking capability.

Related Guides

• How to Reduce Input Lag for Competitive Gaming
• How to Monitor PC Performance While Gaming
• High Refresh Rate Monitor CPU Bottleneck Guide
• Best NVIDIA and AMD GPU Driver Settings for Max FPS
• Optimize Windows 11 for Gaming