3.25.2 / 3.25.3: CPU Usage 100%, GPU low usage, horrendous loading time, unplayable lag/freeze

Since the big 3.25.2. patch and still in 3.23.3 I have massive problems making the game unplayable.

CPU Usage reaches 100% even at the log in screen, character selection, in town, in hideout, in maps. Thist causes very big lags, short screen freezes and several seconds of mouse button freezing - so i can't play anything.

F1 shows the red CPU bar bouncing from 70% to 100% all the time and the green shader bar a max all the time.
The GPU blue bar is at maybe 20%, the MEM, VRAM, Network, Drive bar are all super low.

My windows says CPU usage 100% but GPU at very low usage.

I did not have any problems before 3.25.2 and could play on max settings in deli-maps without any issues - now i can't really walk through town.

Windows 11, Core i7-12700K, 32 GB Ram, Nvidia 4800 super.

Tried Directx12, Vulcan, Direcx11.
Tried setting all graphics to absolute lowest setting.
Tried windowed mode.

Nothing improves the problem.

I made screenshots, but don't know how to upload them here, as I don't see an "attachment" option.

I've been having similar problems to this for a while as well. I've found that the audio channels have been causing pretty significant spikes in CPU usage.. but I'm unsure if this is the primary cause or just something that was already happening and is only really noticeable due to other stuff going on.

Im having th esame issue. Its been driving me crazy...hit 100% for a few seconds and everything lags and stutters. Please Find a fix GGG

Are you on Windows 11 24H2? If so, it could be a problem with Windows. There's a ton of reports everywhere about how it messed up software.