webcam delayed with second monitor plugged


New Member
when i use a second monitor and i use other programmes like safari my webcam signal seems to be delayed with my movements, i cannot fix this delaying my mic because this lag changes trough time. this is very bad for my streams because at first you hear my voice and then you see my lips moving after few seconds. i don't know what to do. the Webcam is a Logitech C920s PRO.