Thanks for the answers. A more detailed description first:
I reassembled, oiled the pallets with 941 and let the watch run for 48 hours dial up.
Then I did the poising and after a full wind the first measurement on the timegrapher with result +2/0/+2.
Then I wore the watch (normal day in the company) for 24 h. Then after a full wind second measurement with result +9/+7/+9.
So maybe the mistake was to let the watch run static in dial up position instead of "shaking" it while wearing? Or the period of 48 hours was too short? Right now the watch is on my wrist and I am observing the "real" gain compared to the atomic clock.
Rolex 1575 is an automatic. It should not make a difference about how much power you have running through the movement. Did you use the correct oils, you might have used to much or to little. You need to let it settle down and then test, that will give a good average of the movements performance