Freeze/Stutter on Launch (Win 10)

About eveytime I launch it the loading bar slows to a halt. Can't even open task manager and have to reboot my pc and hope it opens normally after that. Most recently, it crashed my pc with a KMODE_EXCEPTION_NOT_HANDLED error... Seriously, I though this was supposed to be more optimized than Java, but Java Edition runs WAY better... Not sure what the problem is so I am reporting it here...