Reddit erupts over KB5077181: New update triggers rhythmic gaming stutter

Microsoft’s February 10, 2026, cumulative update for Windows 11 24H2 and 25H2 (KB5077181) bumps systems to OS Build 26100.7840 (24H2) or 26200.7840 (25H2). While this month’s patch has already been linked to a mix of user-reported bugs (including shutdown and networking oddities), a separate set of complaints is now bubbling up from gamers who say the update introduced stuttering that wasn’t there before.

What users say they’re seeing in games

In one Windows Help thread on Reddit, a Windows 11 Pro 25H2 user on Build 26200.7840 reports rhythmic gaming stutter that began immediately after installing KB5077181. They claim it’s not tied to low FPS or network latency, but instead feels like a new hitching pattern that only shows up in-game post-update.

The same user says the stutter stops if they disable Windows “Fullscreen Optimizations” (FSO) for the affected title... but they didn’t need that tweak prior to KB5077181.

As of writing, this is still firmly in the “user reports” bucket: there’s no Microsoft advisory confirming a gaming-performance regression tied to KB5077181, and the reports don’t yet point to a single GPU vendor, driver version, or specific game as the common denominator.

Workarounds being shared

The most consistent workaround in the thread is per-game: disabling Fullscreen Optimizations stops the stutter for at least one affected user, though it may also change expected overlay behavior (for example, how volume overlays appear in exclusive/fullscreen scenarios).

If you can reproduce this after installing KB5077181, Microsoft’s own community guidance is to file a report via the Microsoft Feedback Hub with as much detail as possible (build, hardware, and steps to reproduce), which is often the fastest way to get an issue in front of the Windows engineering pipeline.

Early days, but the timing will raise eyebrows

Coming right after January’s widely discussed update turbulence, any new Windows 11 Patch Tuesday “gaming hiccup” is going to draw attention... even if the underlying cause ends up being a driver interaction, a game-specific conflict, or a coincidence that only affects a small subset of systems.