I used to get great guiding on my AM5, usually with an RMS error of 0.40.7 at the default values so I didn't even bother tweaking PHD2 settings.
But recently it's been abysmal, rarely getting below 1.0. Still works OK with widefield but unusable with F10 (Edge800). So I started tweaking PHD2 according to suggestions I've read here and elsewhere, but it's not really improving.
I usually have my ESPRIT100 with QHY 130 mm guide scope and ASI120mm; thought that was the problem so last night I mounted my EdgeHD800 with SkyWatcher 242 mm scope and ASI174mm. No difference; guiding is just as bad.
Now I'm thinking could it be a hardware issue? Can strain wave gear mounts also go out of whack if it's bumped or something? I haven't crashed it or anything but I have thrown it in the trunk of the car and gone on some bumpy roads.
Anyway, any help appreciated. Here are some PHD2 logs going back a few months: https://openphdguiding.org/logs/dl/PHD2_logs_26B4.zip
You'll see that the earliest one from October is still good, 0.5 total RMS. it gets progressively worse from there.
[EDIT] Sorry I just realized some of those logs are going to be for my other mount (iOptron CEM40). The very latest log from last night is definitely AM5. Let me sort it out and upload definite logs for the AM5 from the past.
[EDIT2] Yeah so it looks like most of the logs from November are for CEM40. Please just look at the October ones and Dec. 5.
