[blunt]

Yes it's a debug log. It was on Windows 10 x64. The zipped log file can be downloaded from:
https://1drv.ms/u/s!At4zlMm23lvUmlOLaUzej1DMIGiW

Thank you very much !

 No problem.  One thing, please check your back end, and make sure it's set for 'time based' and not 'epg based' time shifting.

Also:

11:52:15.226 T:7144  NOTICE: ADDON: peripheral.joystick v1.4.6 installed
11:52:15.226 T:7144  NOTICE: ADDON: pvr.nextpvr v3.3.11 installed
11:52:15.226 T:7144  NOTICE: ADDON: repository.xbmc.org v3.1.4 installed

It doesn't look like you have 3.3.12 installed.  Please try again with 3.3.12.

Thanks! 

The NextPVR add-on version was interesting. I did have it shown up in the Kodi GUI as 3.3.12. I just did an update of the add-on. Enabled log temporarily just to check the version to be 3.3.12. I'll see if that make things better. Thanks !

BTW, I was using EPG-Based Timeshift. I then switched the backend to Time-Based. But it still froze sometimes. I'm gonna play with the newly updated 3.3.12 to see if that works fine.