Just some helpful tips to improving your overall COH2 experience How To Improve Alt-Tab Performance - Enabling Windowed Fullscreen source: https://steamcommunity.com/app/231430/discussions/0/558752449687674326/ Go to Steam -> Library -> Right Click on COH2 and go to properties on Launch Options add: -window -fullwindow -lockmouse -forceactiveThat's it! Recommended Gameplay Settings Of Special Note: Sticky Selection OFF - important to leave off if you want to deselect units. Classic Hotkeys OFF - will place all hotkey button display (bottom right) to match your WASD keyboard layout (faster access than Classic). Player Color ON - can be disabled in solo, but very useful for identifying individual players during large battles. Of Special Note: Custom Aesthetics OFF - keep this off if you don't want to be forced to install/see a bunch of ugly custom skins used by players. Physics LOW - Isn't really important to enjoy the game but can drastically impair gameplay with higher unit counts.