GPS location jumps back and forth

Thing is, my ROMs run Android 8 thru 11 where microG 0.2.27 is fine. I had to manually downgrade microG on the one /e/ build that included 0.2.28.

You are on Android 13. The latest microG is meant for that. I don’t know how well .27 will work on “latest Android versions”. Must be something wrong for a new stack to be implemented.
Will have to check around.