Yes and no.Does it exist some trace tool which can trace TV server scheduler thread?
Had this issue with another MP1 system I support on W8.1. I reinstalled MP Version 1.6 which used to work on this system and it had the same issue.
Tracked the problem down to the Anti Virus software that was recently installed on this system. Reverted back to Windows defender and there has been no further issues with recordings since this change.
It looks interesting, in my case the Windows defender in both Win7 and Win8.1 is switched off. I am using AVG (just web shield for Web browser plugin).
Anyway I will try to uninstall AVG, switch on Windows defender in case of Win 8.1 and I will try some testing again over the night.
I suspect the issue is with the operation of AVG and TV Service. AVG was the software that was removed from the W8.1 system I had this issue with.