Just to the point,
Every time I launch the game, I can see 1 core of my CPU always being used 100% while the others are barely being used at all. And this is just sitting on the main menu of the game. Its been a bug I've noticed since Far Cry 3. I'll load into the game and can see the other 3 cores being used more as they should, but still one core is always at 100% use.
This bug can simply be fixed though. All you have t do is ALT-TAB to Windows, bring up your task manager, find the FC Primal exe and navigate to the CPU affinity setting, toggle OFF then BACK ON the CPU core which is peaking and then ALT-TAB back t o your game. All CPU cores will be working properly now.
If I don't do this, I'll get small occasional fps skips due to that 1 core which s always throttling.
Windows 10
Gigabyte Z77X UD3H
Intel 3770k OC ~ 4.4ghz
Samsung EVO 850 500gb
16GB G-Skill Sniper RAM
Gigabyte Windforce GTX 970 OC 4gb
Razer Taipan Mouse
AOC G2460PG G-Sync monitor