Forcing some users to wait for a patch.
Hundredths of AMD Radeon R9 380 & 390 users have publicly reported that snow crashes or severely degrades their performance in the Microsoft Windows PC version of Far Cry Primal.
AMD Radeon R7 360 and 370 users couldn't replicate that issue on their setup, hinting that title isn't optimized for the R9 lineup.
Ubisoft has yet to comment on when they'll fix that major issue that's forcing some users to halt their progress until a patch is released.
March 13, 2016 update: According to a member on the Ubisoft forums, the developers of Far Cry Primal are indeed working on a patch to resolve this issue.
- Ebuzz1274. "Far cry Primal Crashing when entering North." forums.ubi.com. March 13, 2016 at 4:07 AM GMT +1.