Looks like there were all sorts of errors while trying to record Big Bang Theory. The DVR was not able to keep a stable connection to your tuner, and kept having to disconnect/reconnect. That’s why large chunks of the recording are missing, and it glitches as it jumps ahead.
So for instance the recording started at 8:00:30, and then at 8:06:02 there was a disconnect because no video was received for 3 seconds:
2017/05/11 20:00:30 [DVR] Recording for job 1494547140-3 from 13102AF6 ch3.1 into "TV\The Big Bang Theory\2017-05-11-2000 The Big Bang Theory 2017-05-11 S10E24 The Long Distance Dissonance.mpg" for 31m29.5241603s
2017/05/11 20:06:02 [DVR] Cancelling stream 13102AF6 ch3.1 after 3s read timeout
This could either be a network issue or an antenna signal issue. What’s strange is that later it recorded The Amazing Race from the same channel and there were no issues that time. Also looks like the Gray’s Anatomy recording that was happening at the same time as Big Bang was just fine.