Hi all.
Since last update I'm sufering from irregular framerates, ranging from top 50 somethings to as low as 17 without advice nor previous notice. GPU load is less tan 15% but I had to lower quality settings and the problema is not away... It increases max framerates, but time to time it goes down to 20 or 17 for few seconds, mainly on zoom-in situations.
Note I'm saying 'since last update'. Previously it worked nice and smooth, with just a bit of stuttering from an average 35 fps to 24/25 fps with graphic settings on default médium (only fullscreened).
My hardware is a bit outdated Quad Core Q6600 @ 2,40 GHz with 4 GB RAM runing under Windows 8.1 64 bit, GPU is an Old Reliable GT8800 with 512 MB DDR3 dedicated RAM and last driver versión. Yes, is a third (or fifth) line rig for gaming, but had no issues until last update.