Games take FOREVER to load in Win10

[mistersprinkles]

I'm pretty computer savvy. I have a fast PC with an SSD and everything used to be fast, but I've been having this problem where some games take forever to start up. It just sits there. Sometimes I can see the game open in task manager but nothing is on screen and I can't switch to it.

Is there a fix for this?

System:

Win 10 Home X64
4790K
GTX 1080 G1 gaming
16GB DDR3 2400
ASRock Z97 Anniversary mobo
EVGA GQ 650 PSU
120GB Samsung 840 EVO
2TB Seagate ST2000 HDD