brrr

Full power when you open something heavy.
Quiet again when you close it.

Install

Windows: Run the installer.
macOS: Drag brrr to Applications, right-click it and choose Open the first time, then pick Allow Power Mode Switching… in its menu.
Linux: Put brrr on your PATH and run brrr --install && brrr --tray & (needs power-profiles-daemon).
Omarchy: omarchy plugin add https://github.com/valvesky/brrr.git --enable

How do I add an app?: Choose Add app… in brrr’s menu and type its process name, like ffmpeg (without .exe).
Which apps are boosted by default?: 7-Zip, ffmpeg, HandBrake, Blender, OBS, DaVinci Resolve and the usual compilers.
Why does Windows warn about the download?: brrr isn’t code-signed yet, so SmartScreen doesn’t know it. In Edge choose Keep › Show more › Keep anyway, and if Windows says it protected your PC, choose More info › Run anyway. If there’s no Keep option, run curl.exe -LO https://github.com/valvesky/brrr/releases/latest/download/brrr-windows-setup.exe in PowerShell.
Why didn’t it switch on Windows?: Best performance exists only on the Balanced power plan, and High or Ultimate performance is already full power.
How do I uninstall it?: Remove it under Apps in Windows Settings, run omarchy plugin remove raw.brrr on Omarchy, or brrr --uninstall elsewhere (on a Mac it’s in brrr.app/Contents/MacOS).