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| Image by Clint Patterson |
Over the last few weeks, a lot of PC gamers started reporting something weird after updating Windows 11.
Games that normally ran perfectly fine suddenly felt awful.
Not small drops either.
Some players were seeing:
- massive FPS loss
- unstable frametimes
- random stutter
- GPU usage behaving strangely
And the strange part was that it happened mostly after installing newer Windows 11 updates on 24H2 and 25H2 systems.
The Windows Update Apparently Causing the Problem
The issue appears connected to newer Windows 11 builds:
- 26100.6899+
- 26200.6899+
Many reports started appearing after installing:
Games affected reportedly include:
- Counter-Strike 2
- Call of Duty: Black Ops 6
- Assassin’s Creed Shadows
- other GPU-heavy titles
Some users claimed performance dropped close to 40–50% after updating.
What made this confusing is that temperatures and GPU clocks often looked completely normal.
The FPS just… collapsed.
NVIDIA Finally Confirmed It
After weeks of people blaming:
- drivers
- UE5
- background apps
- Windows tweaks
NVIDIA finally acknowledged the issue.
According to reports, newer Windows 11 builds introduced a compatibility problem affecting gaming performance on some NVIDIA systems.
The issue became especially noticeable in CPU-heavy competitive games where frametime consistency matters more than raw average FPS.
The Current Fix: NVIDIA Hotfix Driver 581.94
NVIDIA released GeForce Hotfix Driver 581.94 on November 19, 2025.
The hotfix specifically targets gaming performance problems affecting Windows 11 24H2 and 25H2 systems.
For a lot of users, this restored performance almost immediately.
Not everyone saw full recovery, but most reports showed noticeable improvement.
Symptoms People Were Reporting
The weird thing about this bug is that it didn’t always look like a normal GPU bottleneck.
Common reports included:
- high FPS but horrible frametime spikes
- sudden FPS collapse after alt-tab
- GPU utilization behaving inconsistently
- microstutter during combat or movement
- games feeling “heavy” despite stable temperatures
A lot of people initially thought:
- their drivers were corrupted
- their overclock became unstable
- shader cache was broken
But the Windows update itself appears to have been part of the problem.
How To Fix It
1. Install NVIDIA Hotfix Driver 581.94
This is currently the main fix most people are using.
If possible, do a clean install instead of upgrading over old drivers.
2. Clear Old NVIDIA Shader Cache
Sometimes leftover cache data can create extra instability after major driver or Windows changes.
C:\Users\YOURNAME\AppData\Local\NVIDIA\DXCache
C:\Users\YOURNAME\AppData\Local\NVIDIA\GLCache
Delete the contents inside those folders.
The cache will rebuild automatically.
3. Disable Extra Overlays Temporarily
Some users reported additional instability with:
- Discord overlay
- NVIDIA overlay
- Xbox Game Bar
- third-party monitoring overlays
Not guaranteed, but worth testing.
4. Check Your Windows Build Version
You can check your build version by typing:
winverinside the Windows Run dialog.
If you’re running:
- 26100.6899+
- 26200.6899+
you may be affected.
Honestly, This Is Why PC Gaming Feels Exhausting Sometimes
One thing I’ve noticed lately is that modern PC performance problems rarely come from one single thing anymore.
Sometimes it’s:
- Windows updates
- driver conflicts
- overlay hooks
- shader compilation
- scheduler behavior
all stacking together.
You can have a high-end PC and still end up troubleshooting for hours after one bad update.
That’s the frustrating part.
Related Posts
- Why High FPS Can Still Feel Laggy
- NVIDIA Shader Cache Stutter Fix Guide
- Windows 11 Services You Can Disable for Gaming
- Best NVIDIA Control Panel Settings for Frametime Stability
FAQ
Does this affect AMD GPUs too?
Most reports currently focus on NVIDIA systems.
That doesn’t necessarily mean AMD systems are completely unaffected.
Should I uninstall the Windows update?
Some users reported improvements after rolling back updates, but results vary.
The NVIDIA hotfix driver appears to be the safer first step.
Can shader cache cause similar stutter?
Yes.
Shader cache corruption and driver leftovers can sometimes create very similar symptoms.
Final Thoughts
If your games suddenly started performing much worse after recent Windows 11 updates, you’re probably not imagining it.
This appears to be a real issue affecting some systems running newer 24H2 and 25H2 builds.
Right now, NVIDIA’s 581.94 hotfix driver seems to be the main workaround while people wait for longer-term fixes.
Hopefully this gets cleaned up quickly, because modern PC gaming already has enough shader and frametime problems without Windows updates making things worse.