Alright, so I got a swift reply from support. Both bugs are known and being worked on and should be fixed on the next update.

Yeah, I created a ticket. Added that one machine is on Win 11 another is on Win 10 also, so my best guess is something with the CPU compatibly perhaps.

Thanks for looking into it. It's wild that it's the same thing on different PCs though. Looks like it's something has to do with compatibly / hardware.

Edit:
Vulgarity

Been using Cinema for years and this never been happening before - here's the video of the simple example with cubes: https://drive.google.com/file/d/1Hy5TnIsRTRefR2g3wjzAGZAITakCMVoG/view?usp=sharing

Please look into that because this is ridiculous.

Cinema always freezes permanently for me when I do Automatic UV > Packed > tick Overlap Identical Geometry and hit apply. It always hangs up at 33%. Tested on 2024 version - works fine. Even tried it on a different machine - same result.

Anyone else have this issue?

Also, when in UV Commands when using Start Interactive Mapping it used to update automatically in UV window, now it doesn't work. Are you aware of this?

Tested on both machines:

Ryzen 7 5800X / 32 GB RAM / RX 6800 XT / Cinema 4D 2025.2.1 / Windows 10
Ryzen 9 5950X / 64 GB RAM / RTX 3090 Ti / Cinema 4D 2025.2.1 / Windows 11