THANKS for this!
I guess that was the problem, because without the drones file, everything works like it should be again. Weird bug.
Thanks again!
But, since I don't want to completely give up on finding the drone:
With the file still there, I used Debug menu to teleport myself back to the PIO that I cleared for a quest, because all went to @%$# when I drove back to the trader. When I got there, everything was fine again with the FPS, but no drone. Then I used the fly mode to go to the trader again to see if the drone was anywhere on the route there. At some point, all when wrong again FPS wise. Used teleport again to the PIO and FPS was fine again.
Guess the drone is truly lost for me.
Time to spawn in a new one.