1. Establish a baseline
Restart, use stock clocks, note game and driver versions, and reproduce the issue in the same scene.
Fix stuttering in Rainbow Six Siege
Repeatable diagnosis before random config edits.
2. Work the likely causes
Precompile shaders when the game supports it; close overlay conflicts; confirm the game is on fast storage; watch VRAM and system-memory pressure; test a stable FPS cap.
3. Change one variable
Retest after each change. Preserve screenshots of settings and revert changes that do not help.
4. Escalate with evidence
Use official support with crash logs, exact hardware, temperatures, patch version and reproduction steps.