I did check with/without USB connected at some time previously and the difference was small.
I re-checked now on 1.0.45 and to me it looks not much different than I may get between two separate calibration attempts.
I thought I had one more thing that I noticed that was different, but it turns out now when I looked at it again that it was only the default position of the marker that had changed.
After a "clearconfig" it is now on 270.035MHz instead of 50kHz as it was before. This is of course not a problem, I was just confused by it when looking for differences between firmwares.
DiSlord, let me know if I can do anything to help and thanks for all the excellent work you put into this project.
/Andreas - SA0ZAP