Was having huge issues with freezing and crashing to reboot, then I uninstalled everything (AC, CM, Pure and CSP) and did a fresh install (one at a time) of AC (plus did the Steam validation check, all good), then CM, then CSP/Pure (had to bump up to V2.0 on CSP for Pure -- version above the...
I updated to 0.1.69 or downgraded to 0.1.60 but it didn't work. I use shadows "off" due to my ultra cheap laptop specs, that's how I can get 25-30 FPS with also low resolution. (Please don't say anything like 'Oh dude, you're not playing that game, you're watching it as a slideshow' etc, I know...