2 times TBS 6928 MCE problem(Solved)

I’m working with 2 pcs TBS 6928 with Windows 7 Media Center application since 2 months now.
In addition, i run both 6928 with DiabloCam2 in the CI (latest firmware) and HD+ (white - HD01) smartcard. So far everything is working well.
But when i watch a live broadcast on one tuner and on the other a recording is starting the live broadcast freezes immediately and the recording stops either immediately or after a few minutes. This happens only for encrypted channels (no matter what - so it has nothing to do with HD+), as far as I've already found out and these are with me now by 90%. It would be easy to push the problem onto the CAM but this worked with my previous TV cards without any problem (in the exact same constellation).
I'm therefore not to be able to see programmed recordings, the main task of the MCES for me.
I even have completly new installed Windows 8 - with the exact same result!
I don’t think it’s a MCE problem, because with my two earlier Digital Everywhere Floppy DTV it was working fine in the same configuration. Also it does work fine with not encrypted channels, so it think MCE it’s doing his job.
I selected both 6928 in MCE and both tuners are working. I also did a completly new TV setup in MCE. What i found out in the mean time: When the live channels freezes and i change to another channel (and back) live tv is working fine, but the recording is definitely canceld and this is my biggest problem. I’ve a lot of programmed recordings but none is working anymore!
I’ve already invested more than 20 hours into this problem with no result, can you help me? Could the problem lie in the MCE CI tool? I think not that I am the only one with such a situation, the problem is possibly already known?
Thanks for any suggestions!
In addition, i run both 6928 with DiabloCam2 in the CI (latest firmware) and HD+ (white - HD01) smartcard. So far everything is working well.
But when i watch a live broadcast on one tuner and on the other a recording is starting the live broadcast freezes immediately and the recording stops either immediately or after a few minutes. This happens only for encrypted channels (no matter what - so it has nothing to do with HD+), as far as I've already found out and these are with me now by 90%. It would be easy to push the problem onto the CAM but this worked with my previous TV cards without any problem (in the exact same constellation).
I'm therefore not to be able to see programmed recordings, the main task of the MCES for me.
I even have completly new installed Windows 8 - with the exact same result!
I don’t think it’s a MCE problem, because with my two earlier Digital Everywhere Floppy DTV it was working fine in the same configuration. Also it does work fine with not encrypted channels, so it think MCE it’s doing his job.
I selected both 6928 in MCE and both tuners are working. I also did a completly new TV setup in MCE. What i found out in the mean time: When the live channels freezes and i change to another channel (and back) live tv is working fine, but the recording is definitely canceld and this is my biggest problem. I’ve a lot of programmed recordings but none is working anymore!
I’ve already invested more than 20 hours into this problem with no result, can you help me? Could the problem lie in the MCE CI tool? I think not that I am the only one with such a situation, the problem is possibly already known?
Thanks for any suggestions!