Full disclosure - I use Astroberry and shamefully haven’t paid a penny to anyone to use the amazing KStars/Ekos/Indi packages. I am presently updated/upgraded to KStars 3.6.0 - and suffer from occasional glitches. For instance each new session KStars will crash on taking the first guide camera image for polar alignment. My workaround is to capture an image with the main camera before trying polar alignment. Similarly there are some issues with the Load and Slew feature in the Alignment tab, so my present workaround is to avoid doing this. Of course this is somewhat frustrating since it used to work so well. I also only use the 5GHz WiFi hotspot for control communications with my laptop PC via VNC, so reach is adequate for my situation at around 6m, and is relatively dropout free. But I accept the limitations of the RPi4 and keep an eye on the CPU and memory occupancy graphs, and take as much processing burden away as I can. So if I wish to see an image in debayered colour I copy it across to the laptop and look at it there in ASI Studio Fits Viewer, and if I want to do EAA I run SharpCap Pro live stacking on the laptop, using the camera folder monitor option.
I know that many of the KStars/Ekos/Indi developers are not paid for their work, and I tolerate the few issues I have, knowing that this forum is feeding back bugs which these excellent contributors may well correct in a future upgrade. The improvements introduced in my experience in the last three years (since the RPi4 came on the market) have been truly amazing. In the meantime I am comfortable with the 99% which works fantastically well, and accept having to look for workarounds for the other 1%.

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