Prioritise games in the multimedia scheduler
Raises the MMCSS 'Games' task priority and lowers the background reserve to 10%.
Applying it needs Nexus Standard or Pro. Every plan can read it here and undo it in Restore Center. Compare plans
What it changes
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Games\GPU Priority = 8 HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Games\Priority = 6 HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Games\Scheduling Category = "High" HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Games\SFIO Priority = "High" HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\SystemResponsiveness = 10
Before anything is written, the review screen shows this setting's current value on your PC next to the new one.
Why it helps
Games that register with MMCSS get more CPU/GPU scheduling priority.
Trade-offs
Only affects games that opt into MMCSS; many do not. Background audio/streaming gets less headroom.
Evidence
Limited evidence means: popular, but gains are rarely measurable. Expected impact is small (1 of 3): how much it can matter when this is actually the bottleneck on your PC, not a promised gain.
Gains from this tweak are rarely measurable on modern Windows, so it is never recommended or applied in bulk. If you try it, measure before and after with the Benchmark and keep it only if it helps.
Is it in a pack?
No. Packs never include tweaks with Limited evidence.
How to undo
Switch the tweak off in Nexus, or open Restore Center and restore this change (or choose Undo last change). Nexus writes back the original value it recorded before applying, not a generic default, then reads it back to confirm.
Like applying it, undoing it takes full effect after you restart.