Tvheadend

Hi,
I have problems with recording with tvheaded with a 6591.
The initial setup works without problems, all channels were found.
But when i begin one or more records i get many "data errors". Sometimes so many that the record abort.

With a AVM Repeater with DVB-C everything works fine, no errors an no problems.

The only difference i can spot is, under "status" the 6591 tuners never have a SNR level.

The Repeater has the firmware 7.02, the 6591 has the 7.29, tvheaded has the 4.3-1994~gc7b713edb

I searched for a "best practice" but cant find anything.....