How to Fix G-Sync Stuttering in Yet Another Zombie Survivors: Ultimate Performance Guide

If there is one thing that can ruin a good bullet-heaven survival game, it is not getting overwhelmed by zombies. It is watching your perfectly capable gaming PC turn a huge swarm into a mess of tiny camera hitches and uneven frame pacing. Yet Another Zombie Survivors is normally a fast, satisfying game, but once the screen fills with enemies, effects, projectiles, and damage numbers, some players using G-Sync or FreeSync displays can start noticing micro-stuttering that is surprisingly distracting.

What makes this problem annoying is that your average FPS can look completely fine. You might be sitting comfortably above 100 FPS and still feel the game judder when moving around the arena. That is because smooth gameplay is not only about average FPS; frame pacing, synchronization, refresh rate, and the way Windows and your GPU driver communicate with the game all matter.

I have run into enough PC games with similar VRR problems to know that the first instinct—lower every graphics setting—is usually the wrong one. Yet Another Zombie Survivors is not necessarily struggling because your GPU is too weak. In many cases, the better approach is to clean up the synchronization setup and make sure the game is working with your monitor instead of fighting it.

Here are the fixes I would try, starting with the ones most likely to make an immediate difference.

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1. Set Up V-Sync and G-Sync Correctly

The first thing I would check is V-Sync. Having G-Sync enabled while also allowing the game’s own synchronization system to control frame delivery can sometimes produce inconsistent results, particularly when the frame rate changes rapidly during large zombie waves.

For an NVIDIA setup, try this configuration:

1. Launch Yet Another Zombie Survivors and open the Options menu.
2. Go to the Graphics settings.
3. Turn Vertical Synchronization off.
4. Save your settings and exit the game.
5. Open the NVIDIA Control Panel or NVIDIA App.
6. Find the game’s profile under the program-specific 3D settings.
7. Set Vertical Sync to On at the driver level.
8. Apply the changes and launch the game again.

The idea here is pretty simple: let G-Sync handle the monitor’s variable refresh behavior while the driver controls the V-Sync boundary.

I would not assume this configuration is magically perfect for every PC, though. Different monitors, drivers, refresh rates, and display modes can behave differently. If the game feels worse afterward, revert the change and test the alternative rather than endlessly stacking tweaks on top of each other.

2. Cap Your FPS Below Your Monitor’s Refresh Rate

This is probably the most useful trick for anyone running a high-refresh-rate G-Sync monitor.

A VRR display works within a specific refresh range. If your game reaches the monitor’s maximum refresh rate, the synchronization behavior can change, and you may start seeing tearing or uneven frame delivery. Keeping the game’s frame rate a few frames below the display’s maximum gives G-Sync some breathing room.

A simple rule is to cap FPS around 3 frames below the monitor’s refresh rate:

You can apply the limit through the NVIDIA Control Panel by opening the game’s program profile and finding Max Frame Rate.

For example, with a 144Hz monitor, I would start at 141 FPS rather than trying to push the game to 144 FPS exactly.

There is another option that is particularly interesting with Yet Another Zombie Survivors. If you still experience camera jitter at a high frame rate, try a lower fixed cap such as 60 FPS or 90 FPS. That might sound strange when you own a 144Hz or 240Hz display, but a stable 90 FPS can feel considerably better than an inconsistent 140 FPS.

The important part is not chasing the biggest FPS number. Consistent frame delivery wins.

3. Test Fullscreen Instead of Borderless Mode

Borderless fullscreen is convenient, especially if you regularly switch between a game and Discord, a browser, or another application. The downside is that Windows has more involvement in the presentation process, and that can occasionally complicate VRR behavior.

Open the NVIDIA Control Panel and find Set up G-SYNC. If you normally use borderless mode, try enabling G-Sync specifically for fullscreen applications first.

Then launch Yet Another Zombie Survivors and test its display modes.

I would personally test them in this order:

• Fullscreen Exclusive
• Borderless Fullscreen
• Other available windowed modes

Play for a few minutes in each mode, preferably during an intense run when the screen becomes crowded. Don’t judge the result from the first quiet minute of gameplay. The stuttering problem often becomes much easier to identify once hundreds of enemies are moving around simultaneously.

If fullscreen works smoothly while borderless mode does not, you have already narrowed down the problem considerably.

What About Windows VRR?

If you prefer borderless gaming, check Windows’ graphics settings for Variable Refresh Rate and Optimizations for windowed games, where available on your version of Windows.

These settings can improve compatibility for modern windowed games, although I would not blindly enable every Windows gaming feature and assume it will help. Test one change at a time so you know which setting actually made the difference.

4. Clear the DirectX Shader Cache

Here’s a fix that often gets overlooked because shader-cache problems don’t necessarily look like shader-cache problems.

A game can suddenly develop strange stutters after an update, driver change, or hardware configuration change. The average FPS may remain respectable, but the frame-time graph can become ugly, especially when the game starts rendering effects or assets that have not been cached correctly.

If the stuttering appeared after a patch or GPU driver update, clearing the shader cache is worth trying.

Close Yet Another Zombie Survivors and Steam first. Then open the Windows Run dialog with Windows Key + R and navigate to the NVIDIA DirectX cache location:

%AppData%\..\LocalLow\NVIDIA\PerDriverVersion\DXCache

Delete the contents of the folder, then restart Windows.

Your GPU will rebuild the necessary cache files the next time you play. The first run afterward can occasionally behave differently while shaders are being recreated, so don’t immediately assume the fix failed if the initial launch isn’t perfect.

If you use AMD hardware, the exact cache location and cleanup procedure will be different, so don’t blindly follow NVIDIA-specific folder instructions. AMD’s driver software has its own shader-cache behavior and controls.

5. Turn Off Overlays

Overlays are incredibly useful until they aren’t.

Steam, NVIDIA software, Discord, recording utilities, performance monitors, RGB applications, and other background tools can all hook into games. Most of the time they work without causing noticeable problems, but when you’re troubleshooting frame pacing, I prefer removing as many variables as possible.

Start by disabling:

• Steam Overlay
• NVIDIA In-Game Overlay
• Discord Overlay
• Third-party monitoring overlays
• Unnecessary recording or capture software

If you use MSI Afterburner and RivaTuner Statistics Server, temporarily close them as well. I wouldn’t uninstall anything just because the game stutters; simply shutting the software down for one test run is enough to see whether it changes the behavior.

The same goes for utilities such as f.lux and other applications that interact with your display. They may have nothing to do with the problem, but troubleshooting becomes much easier when you temporarily eliminate potential conflicts.

6. Don’t Ignore the Monitor’s Own Settings

This is one of those fixes that is easy to miss because everyone immediately looks at Windows or the GPU driver.

Check the monitor’s on-screen display and make sure its intended refresh rate and VRR mode are actually enabled. Depending on the monitor, G-Sync Compatible, Adaptive-Sync, FreeSync, and related options can be controlled directly through the monitor firmware.

If you recently changed cables, moved from DisplayPort to HDMI, or switched between different inputs, double-check everything. Not every connection supports every combination of refresh rate and VRR features in exactly the same way.

For NVIDIA users, also verify that G-Sync is enabled for the correct display in the NVIDIA Control Panel. If you have multiple monitors connected, testing the game with only your primary gaming display active can be useful as well.

7. Check Your Actual Frame Times Instead of Trusting FPS

One of my biggest pieces of advice for diagnosing Yet Another Zombie Survivors stuttering is to stop looking only at the FPS counter.

A game running at 120 FPS should theoretically feel smooth, but if frame delivery constantly jumps between different frame times, your eyes can still catch the hitching. This is why a game can report a high FPS number while movement feels strangely uneven.

If you have a performance overlay that displays frame time, watch what happens when the zombie population becomes ridiculous. If the frame-time graph suddenly develops spikes while average FPS remains high, you’re dealing with a frame-pacing problem rather than simply needing more GPU horsepower.

That distinction matters because lowering texture quality or other graphics settings may do almost nothing if synchronization is the actual culprit.

8. Try a Lower, Stable FPS Target

Sometimes the simplest solution is the best one.

If you have a 144Hz monitor but Yet Another Zombie Survivors keeps bouncing around between 110 and 144 FPS during massive enemy waves, try locking it to 90 FPS. If that feels better, you have learned something important: the problem is likely related to consistency under load rather than your system’s inability to render the game.

This is particularly relevant for bullet-heaven games because their performance profile can change dramatically as a run progresses. The opening minutes might be incredibly light, while the later stages can throw an absurd number of enemies, projectiles, particles, and calculations at the CPU and GPU.

A stable 60, 90, or 120 FPS can therefore be preferable to an uncapped frame rate that constantly moves up and down.

9. Update Your GPU Driver, But Don’t Chase Every New Driver

Keeping your graphics driver current is sensible, especially if the stuttering started after a major game update. NVIDIA and AMD regularly release driver updates that address compatibility and performance issues.

However, I wouldn’t install every optional driver immediately and assume newer automatically means smoother. If the problem began immediately after a driver update, testing the previous stable driver version can actually be more useful than installing another one.

The same principle applies to the game itself. If a patch recently changed rendering behavior, check whether other players are reporting the same issue before spending hours rebuilding your entire PC configuration.

A Practical Fix Order

If you don’t want to spend an entire evening changing twenty settings, this is the order I would use:

1. Disable in-game V-Sync and configure driver-level synchronization.
2. Set an FPS cap below your monitor’s refresh rate.
3. Test exclusive fullscreen.
4. Disable overlays and background monitoring tools.
5. Clear the DirectX shader cache.
6. Check monitor VRR and refresh-rate settings.
7. Try a lower fixed FPS cap such as 90 or 60 FPS.
8. Compare current and previous GPU drivers if the issue appeared after an update.

Changing everything simultaneously is tempting, but it’s actually a terrible way to troubleshoot. If the stutter disappears, you won’t know which adjustment fixed it, and if it doesn’t, you’ll have no idea which setting to undo.

The Best G-Sync Setup for Yet Another Zombie Survivors

For an NVIDIA gaming PC, I would start with a fairly conservative configuration: G-Sync enabled, the game’s V-Sync disabled, driver-level V-Sync enabled, and an FPS cap around three frames below the monitor’s maximum refresh rate.

If that still doesn’t feel smooth, I would stop chasing maximum FPS and test a fixed 90 FPS or 60 FPS limit. In a game like Yet Another Zombie Survivors, consistent frame pacing is much more important than having an impressive number in the corner of the screen.

The other big lesson is that not every stutter is actually a G-Sync problem. Shader compilation, CPU load, background overlays, borderless-window behavior, driver changes, and heavy late-game scenes can all produce symptoms that look almost identical from the player’s perspective.

That is why the best approach is methodical. Change one thing, play through a demanding section, and see whether the camera movement and frame delivery actually improve. Once the huge zombie crowds stop producing those little hitches, the game becomes much easier to appreciate for what it does best: throwing an absolutely ridiculous number of enemies at you and letting you build increasingly broken combinations of weapons and upgrades.