Try editing your D3prefs.txt in the Diablo 3 folder in My Documents
I'm using these and it helps a good amount :
PreferencesVersion "44"
PlayedCutscene0 "1"
PlayedCutscene1 "0"
PlayedCutscene2 "3"
PlayedCutscene3 "131"
DisplayModeFlags "0"
DisplayModeWindowMode "1"
DisplayModeWinLeft "8"...