In the top-right corner, next to “release-566” it says “(x32)”.
I checked the settings, and the option “force x32” is un-ticked.
Checked the user_settings.json “force_32_bit” is false
Also ran the game without mods, which didn’t make a difference.
Processor Intel® Core™ i5-2500K CPU @ 3.30GHz
Video Card Radeon HD 7850
RAM 8.0 GB
Operating System Microsoft Windows 7 Service Pack 1 (build 7601), 64-bit
I don’t know what else to do, hopefully you may know how to solve this issue.