by Ernie » Mon Nov 05, 2018 2:00 am
Hi Rainer,
After selected Spaced Repetition:
Deck Options > Card Order > Spaced Repetition Settings
There's no way to always set the interval 8h. There are a couple settings related to your request:
Wrong Interval Factor: Default is 0.5. You can try 0.1. This will lower interval more drastically on a wrong answer.
Max Interval After Wrong. Defaults to 30 days. Lowest value is "1 day", which you can try.
So with the above, you can always get 1 day or less for next interval after a wrong. If the interval is about 3 days or less, with a wrong factor of 0.1, the next interval should then be 8 hours.