I run a rig with the following specs i5-2500k cpu (3,3ghz) 16gb RAM GTX 970 (4GB) Windows 7 professional Game installed on SSD disk. I have in general very high FPS but in some places - especially Novodimitrovsk, Severograd & Svetlojarsk (despite that there are few people there compared to, say, Berezino, where my FPS is higher) - I get absolutely horrendous FPS, well below 10. I run with maxed graphics except post processing, because it blurred the distance so much. Is this problem geographical on the map or am I doing something wrong? Resolution is 1920x1080. Is the issue perhaps my CPU (bought ~2011), that is a bit older than the rest of the system?