fullscreen windows

why do ppl spread false information abt this having more input lag and less fps
i use this bc alt tabbing is faster with this and i tested everything there was no disadvantage. +0.2ms overall input lag which is literally margin of error and unnoticeable at all.
dont get scammed and use it if u get errors alt tabbing or alt tab is slow. fullscreen mode wont give u free ranks or kills

i alt tab my computer decides to stop for a good 10 sec, prob cuz the fact my computer cant even handle two videos at once and gets this error and bluscrens