With my video capture software, what you see in the popout is completely irrelevant and independent from the video capture that's laid onto the harddrive of your computer. You'd think they were linked, but they're not.
Having said that, I'm not familiar with any of the software you mention, but have some experience with video capture. My first reaction is buffer underrun...or whatever it's called when the computer can't keep up.
I'm told that video capture is one of the most RAM intense things that can be performed on a PC, so I'll offer several soft solutions first and then several hard solutions.
'SOFT' Solutions
- Re-start your computer and then immediately perform your capture. Sometimes that works for me...a re-start seems to de-clutter my PC. Not sure at all what's going on there but my machine will sometimes seem to run better after a re-start than if it hasn't been restarted for a few days.
- Close ALL applications (including the video popup if possible) and leave video capture as the only activity being performed by the PC. No multi-tasking because that's gonna scarf-away RAM from the video capture task. (This would include closing the onscreen display of the capture that you mention, because that adds nothing to the actual capture of the stream onto the harddrive and also sucks RAM.)
- Defragment your harddrive so the harddrive doesn't have to search for free disc space to place the captured data.
- Finally, get all the crap out of background on your PC...get rid of cookies and spyware that resides in background and slows down PC operations. Run Ad-Aware or equivalent.
FWIW, I've had video captures run fine on my computer until I got onto the PC and started surfing the net. That ODed the machine...the machine wasn't able to keep up and after that I started getting blue screens in my video...or balky video captures where the video freezes up for a few seconds at a time while the buffer underrun cleared.
'HARD' solutions...
First, my video capture card is a Hauppauge card with video processing chips on board the card. That's one of the very best things you could do for video processing because then the video tasking is not competing with onboard RAM for processing.
Second, buy and install some more RAM chips.
Finally, make sure you're performing your video capture on a machine that has a fast microprocessor. A dinosaur computer simply isn't gonna be fast enough for video capture.
Hope these suggestions help.