Peculiar Framerate Capping

As of the update that has launched today, there seems to be a strange phenomenon where the framerate is capped at a specific number and refuses to go any higher (in this case being capped to 44.) At first this was believed to have been a mod issue and testing was done to find out if they were the cause; after disabling them it seemed to help for a short while, however this issue seemed to emerge after further poking around with the potential cause and now it seems to be affecting the entire game (including menus) even without a single mod enabled. Normally this rig is capable of handling chunky megabases and not losing many frames, and there doesn't seem to be any anomalies in relation to RAM or CPU usage as far as can be seen, so it's still unsure as to what causes this.