FPS going crasy starting last night 27.02.2014

[Regulator Sierra 19]

So i logged in yesterday and im getting horrible FPS. usually ive been running around 50 outside larger cities and mid 20s in cities.

Now im down to around 10 everywhere. and it spikes to as low a 3 frames.

 

Ive been "good" for the last 200 hours of playing but yesterday something happened,

got some buddies who had problems to and in the end we had to log out as it was unplayable.

 

Are more ppl getting this?

I havent changed anything on settings and so.

It started on Experimental with some light beams in the sky, tried to look at the ground a boom 60frames no problem.