I'm sure it was no warmin issue as my MxB was running about an hour when i tried the fix.
And i got rid of the endless regeneration on the first try pressing 'record + 1/32'.
BUT i just as i powered it on today the issue was back just like before.
I tried the same trick, but without waiting for the warmup. This time it didn't work.
I let it run for a while and try again later.
Edit: Warming up 10 min helped, i was thinking the effects dont need time to warm up. Seems I was too impatient