Ah okay righto, I’ve sent you a message with something else we can try.
I have responded to your support portal ticket
Though, for anyone else who may come across this post I’ll drop the answer here too -
Activating a Collector Edition key will simply upgrade the account, and nothing e.g. DLC will be lost.
I might not followed this completly.
Is the issue that the CPU is using 100% or that the FPS is low. Regarding why performance has decreased I can’t answer that at all but I might explain why 100% might be reasonable for one core.
But regarding 100% uthilization I would assume this is expected when you are CPU bottlenecked. Which VT2 oftens is due to heavy CPU usage.
The model is that we have 2 main threads, game and render thread that are the heavy lifters. We then have worker threads. If one of the main threads is the bottlneck it will likely be working ~100% of the time unless you cap the frame rate. if you would be GPU bottlenecked, these 2 threads would be idle in the end of a frame and thus not be working 100% of the time.
At least one of your mods is causing problems, Crosshair Kill Confirmation being one of them, but I understand you’ve already uninstalled all of your mods with no success!
One more question! When you drop to 2-10 FPS, could you open the Task Manager - where does your CPU, GPU and Memory usage % sit at that point?