On Tangled Shore and maybe on everyone else locations, game using only 2 cores 2 threads CPU. You can have 4, 6, 8, 12 cores, but game will still be using 2 cores. Enableling multithread render in CVARS, makes all cores CPU work more evenly. Before BL this was not.

so here is the problem with that, even on my 3700x I still see 4-6 (or 8-12 SMT cores) in use, CVAR enabled literally shows such little benefit in most areas when its enabled. heck as proven with nessus test, CVAR enabled leads to lower FPS with lower GPU usage than when its disabled. CVAR only shows one side of the problem (CPU issue if it is a CPU issue) the other issue is the excessive GPU usage as noted by me and other users even on lowest preset with extremely low resolution set. I should not be seeing 80%+ GPU usage regardless of resolution set on lowest Preset (this has nothing to do with the CPU) this is clearly some draw call issue with DX11 or there is something internally being rendered that should not be thus leading to excessive GPU usage regardless of settings turned on/off. There very well could be a CPU utilization issue, but this issue I can 100% confirm is not the cause of the extremely low FPS we see, the only thing that would tax FPS to the extent we see Post BL compared to Pre BL (in most cases almost a 40% reduction) is graphical changes or a bug in the render pipeline. To explain it a little better, CPU usage should inherently increase at 720p lowest preset (any benchmark of any game will show the same) why? because your effectively removing a lot of the workload being pushed to the GPU (aka render pipeline) thus FPS should also increase, but as FPS increases so does the CPU usage, more (higher) FPS requires more CPU usage to handle the processing of frames. but the issue is, I dont see this behaviour when testing a 720p lowest preset, indicating to me there is still a "GPU bottleneck" aka data (to much data) still being pushed to the GPU hence the extremely high GPU usage still seen on lowest res/preset.