I’ll be straight with you—stripping services for latency has a real ceiling, and most people overestimate it. The actual measurable gains come from cutting things like Superfetch/SysMain, the Connected User Experiences and Telemetry services (DiagHost), and the Diagnostic Policy Service, which you can kill with a clean winutil or ReviOS/AtlasOS preset. But here’s what most guides skip: disabling services won’t drop your input latency if you’re still on a balanced power plan with CPU states throttling down. The hardware interaction matters more than the service count—set your power plan to Ultimate Performance, lock your CPU P-states, and make sure your mouse is polling at 1000Hz (or 8000Hz if your polling divider is set right) at the driver level. I’ve benchmarked this on a 4090/5800X3D rig and the biggest single win was actually turning off hardware-accelerated GPU scheduling in the display settings combined with capping frame rates to match your refresh rate, which cuts input queue latency far more than any ISO tweak.
The real danger with custom ISOs is breaking the services your games actually depend on—don’t nuke things like the Windows Update Medic service or the Xbox Identity Pack if you play on Game Pass, and be careful with the Plug and Play service since hot-swapping peripherals and even GPU driver reinstalls rely on it.
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