Question PC runs very slow after every other boot

Jul 2, 2021
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I've been encountering a strange error for some time now on my desktop. The problem is that if I turn on my computer for the first time in a given day, it'll run very slowly. By this I mean that games will suddenly take around 5 times longer to load a map or get into multiplayer, launch them etc. However, if I restart the computer it's like there was never a problem to begin with and everything's working fine. But if I restart it again after that it's back to being extremely slow. I was even able to tell which time it'd be slow because on slow boots for some reason, my installation of Malwarebytes antimalware will not launch on startup yet on a restart where everything is fast again it'll launch like normal.

Does anyone have any idea what's going on? I'm not that tech-savvy when it comes to hardware but I've been thinking it's maybe motherboard or hard drive related?