Weird screen problem

Hello,
as I'd expect all of you to be partying hard, maybe there is someone who could try and help me with this(although I think there isn't anything left I can try...

So my problem started pretty recently, maybe 4days ago or something - basically my ingame screen looks like I have vsync on.
It tears in the middle of the screen and I sometimes can see the upper half is a bit more to the side then the side down(while moving of course) - also the visualisation is fucking awful and mostly when I aim at any game where you get some kind of feedback I just go full luck (but that's because I have 60hz IPS monitor from Philips imo)..

But this tearing thing is very strange as it happens in both CSGO & ET but not in quakelive, that is smooth..
Also I notice that in ET & CSGO my mouse movement is ridiculously off what I'm actually doing (I wanted to record it and show it, but it looks bad with GOPRO and nothing can be seen...) - basically it seems like my response time from mouse -> PC -> screen is so huge I can notice it (I have this monitor for smth around 9months and never had this before) and it's really annoying, although I really think in CSGO it's because my fps aren't really stable and I get 75-80fps on some maps and sometimes 90fps when I'm lucky...


Has anyone ever came across such a thing?

chick