I Flew my Hex, which flies quite well using GPS, and which has flown reasonably well using OF outside. But be ultra cautious flying indoors for the first time with OF, I stayed very low - about 1 foot of the floor for the entire flight. In Alt hold things were fine, but in loiter, it was erratic, then became unstable and crashed. The only thing different about this flight was the height of the flight. Is it possible that low altitude makes the navigation solution noisy? I would attach the log if it were smaller.
As with all logs post a link to it from a file storage provider.
Thanks dkemxr. I’m posting a link here. Not done this before - hope it works
or maybe this