This usually happens if your PC’s CPU usage is very high while you are recording.
If you are using GDI record mode, switching to MPEG record mode (go to Settings -> Record Mode / Performance) will usually significantly lower FlashBack’s CPU requirement.
Other things you can do:
- Reduce the size of area that you are recording
- Reduce the recording frame rate
- Close any unneeded apps that are running in the background.
