Step 1

Open iStat Menus > Alerts and set a notification threshold at 80% memory pressure — the Mac warns you before apps start freezing rather than after.

Step 2

Click the CleanMyMac icon in the menu bar and hit Free Up on the Memory tile — clears unnecessary processes and cached memory without touching anything important.

Step 3

Open App Tamer, find the resource-heavy app in the list, and set a CPU limit — the app keeps running but stops monopolising memory when it's not the active window.

Step 4

Open QuitAll from the menu bar and quit all running apps in one click — faster than hunting through the Dock one by one when memory pressure hits red.