Decoding hangs after channel change

[AndersB]

I am experiencing problems with watching after channel change. Quite often when I change channel, the decoding hangs after a few seconds and I need to switch to another channel and then back again to get it going again. This usually happens the first time I switch to a certain channel, after this the subsequent changes to this channel doesn't present a problem. The problem occurs and all encrypted channels so therefor I would guess there is something wrong with the decryption but I would like some input on this - what might be the problem and is there something I can do to fix/ímprove it?

 

I am using latest DVBViewer version and yes, I have a valid smartcard from my provider in the CAM (I use fireDTV/S box)