Weird performance and other issues.

[TheTacoSniper]

So for the past few days I have been getting some strange lag is CS:GO. My fps always used to be around 250ish but now it is hovering around 80 and dropping into the 50s occasionally. I don't know what could be causing this, but the problem started after this happened http://linustechtips.com/main/topic/245476-help-i-screwed-up/#entry3369627 . I decided to try and see what my FPS was in BF4 before I posted this topic, but when I started it up, it stayed in windowed mode and when ever I clicked on it it would try to go into fullscreen mode and just return to windowed. I have no idea what is going on guys, should I just format both of my drives and have all my problems go away? 

[ExcitezR]

So for the past few days I have been getting some strange lag is CS:GO. My fps always used to be around 250ish but now it is hovering around 80 and dropping into the 50s occasionally. I don't know what could be causing this, but the problem started after this happened http://linustechtips.com/main/topic/245476-help-i-screwed-up/#entry3369627 . I decided to try and see what my FPS was in BF4 before I posted this topic, but when I started it up, it stayed in windowed mode and when ever I clicked on it it would try to go into fullscreen mode and just return to windowed. I have no idea what is going on guys, should I just format both of my drives and have all my problems go away? 

after clearing the CMOS do you still have your overclock on you cpu?