The game ‘stutters’ every 2 seconds – all animation stops for a fraction of a second every 2 seconds. When it updates all the vehicles and people jump to where they should be. This includes the mouse pointer.
Seems unrelated to game speed, happens even when paused – mouse stutters when I move it around while the game is paused.
All my graphics options are low or off (Ambient, HDR, Ref, Shadows & Geo) the game is windowed in a small window.
Doesn’t appear to be graphics related, is there some task that happens every 2 seconds? The game was absolutely fine before I upgraded to Yosemite.