Glad it's not just me. Google Maps must think I am driving blindfolded or just trying to annoy it on purpose. Same boat - I don't use gps enough to say when it started. It's painful though. Would try out an older version or another rom to test but the easy LineageOS updates have spoiled me to the point that I'd have to read up again on the A-B stuff.I have the same problem with my gps. Sometimes I can calibrate it close to what it should be but it always loses calibration at some point and getting it recalibrated is hit and miss. Super frustrating. I wonder if going back to 18.1 would fix it. I might try going back one of these days to see if my gps and call issues go away. I don't recall if the problem coincided with upgrading, because I don't make calls or use the gps very often so it wasn't something I would've noticed right after upgrading.