I suppose you have noticed that Radek has made the KStars 3.6.0, Indi 1.9.7 and PHD 2.6.11 updates available from the astroberry.io repo 2 days ago?!
Currently running KStars/Ekos/Indi on two Raspberry Pi 4Bs 4GByte under Raspberry Pi OS thanks to Astroberry
Two mounts, two Fracs, a Newt and a Mak and a couple of OSC cameras.
But be careful. Looks like some people have crashes with the internal solver with the current version. Switching to an external solver like ASTAP should help temporarily.
Is anyone out there where the new polar alignment works with the plate solve refresh on a raspberry pi 4 2GB? On my system i always get a timeout. The first 3 images during polar align work flawless - but after hitting refresh i only get error messages in the log area: "solver failed: 2,7s". I have tried different solvers. ASTAP, Local Astrometry, Internal solver - all have the same problem. I tried my previos SD-Card and a System setup new from 2.0.4 with all available updates. Both behave the same.