STEMS analyzing problem

Hello everyone.

I have DDJ GRV6 controller and on my Rekordbox, STEMS separation works perfectly but only on poor sound quality (analyzing speed option is chceked). When I switch to Quality option and when I load any of my tracks no  analyzing is taking place (no blue line under the waveform) and  I my laptop has 32 GB of RAM and really good procesor so I don't know what is the issue - uninstalling and installing again is not working. When I installed Serato Pro STEMS worked just  perfectly fine but I don't want to work on Serato and would like to stay on Rekordbox.

Anyone had the same problem as me and can help? I am on Windows 11 by the way but I don't know is this even important talking about the STEMS issue.

Any help I can get to fix this will be much appreciated.