Your issue is not common, and has been reported by only a couple users. 99% of Apple TV Channels users have never experienced anything like this.
So there is something with your configuration that is causing a problem. You should troubleshoot you network / dvr server. Try some different things. Try running the DVR outside of a VM. Try a different network cable. Try changing some network settings on the OS.
If this was a rampant issue with Apple TV, these forums would be booming with requests for an update. But that is not the case here. It is your setup. There is something that YOU can change to fix this, you just need to find it.