Nice work Yaobing! It appears to have fixed the problem 100%! Analog channels now play as good as I could ask them to. The graph info is below if you still need it.
I still expect to have problems recording and time-shifting. Can you try recording? While a channel is playing, right-click and choose "TV Recording -> Start Recording". If it starts recording, you would see stats showing at the bottom of screen. Right click "TV Recording -> Stop Recording" to stop. If it does not work (I expect it does not), email me a log file again.
Now when playing digital channels, they sort of default to having large black bars on all sides. If I adjust to an aspect ratio, it seems to stretch and fill the screen but can this be a default?
The default is to fit source rectangle in video window without cropping. What kind of channel (SD or HD)? What kind of display (4:3 or 16:9)? Here are examples in which black bars appear on all four sides:
1. HD channel, but movie is 4:3. TV station puts bars on left and right. Display is 4:3. Technically, MC is displaying a 16:9 source (with bars) on 4:3 display, so MC adds bars top and right.
2. SD channel, but the movie is 16:9. TV station adds bars top and bottom. Display is 16:9. MC is trying to show 4:3 source on 16:9 display, so bars are added left and right.
Does either one describe your situation? If so, choose "Crop" aspect ratio option to fix it.