A: Yes. In windowed mode, your desktop compositor (DWM.exe) also renders. In exclusive fullscreen, the game gets direct access to the display buffer, typically boosting FPS by 10-20%.
Open 1v1.LOL right now. Join a match. Open settings. Toggle Fullscreen ON. Press F11 to hide your tabs. You will never play in a small window again. 1v1lol work fullscreen
A: Press the Esc key, click the "Window" icon in the game’s settings, or press F11 again if you are using browser fullscreen. A: Yes