Yes, I have the same issue with both versions. Only difference is CLI isn't giving any errors, doesn't apply the timings either though.

It turns out the "ADL2_OverdriveN_SettingsExt_Set" error I mentioned earlier may be unrelated after all. I just realized I'm only getting it trying to import previously saved .xml files, but if I manually change any value and hit apply it works. After a lucky boot that is, if any of my cards happens to show any readings in GUI.

I thought it was just xml files saved with different drivers that caused it at first, but I didn't see any reference to driver version in any of my xml files. I used to import no problem before the driver reinstall, come to think of it, I reinstalled the same driver first time around. I'm on 19.4.1 currently.