Normal
The same comments apply as per this thread:https://forum.team-mediaportal.com/threads/tv-hd-pvr-tv-freezes-after-channel-change-when-using-spdif.118549/ ...(which I guess you've already found). It is something in the chain from the Colossus to your screen and speakers running out of data. This is a really complex problem which is unique to capture devices such as the Colossus because we are not able to detect the real channel change.
The same comments apply as per this thread:
https://forum.team-mediaportal.com/threads/tv-hd-pvr-tv-freezes-after-channel-change-when-using-spdif.118549/
...(which I guess you've already found).
It is something in the chain from the Colossus to your screen and speakers running out of data. This is a really complex problem which is unique to capture devices such as the Colossus because we are not able to detect the real channel change.