Thanks for your effort. This will narrow things down quite a bit. I will try and find such a signal and see what by testbox does. I also have a question for you: have you tried watching the same signal with the factory firmware, and if so, do the same problems occur then as well? If not, there is potentially a driver problem, else it may be a limitation of the current hardware, as the symbol rate is rather high.

Regards,

Audioniek.