You do need to leave reasonable gaps to allow the previous triggered event to settle. In horseracing 10 min is usually enough, but not always. In the event of a market not being settled, future markets will still have bets triggered when the offending market eventually settles. The whole day's betting will not fail due to a late settling market, but obviously if, for whatever reason, a market failed to settle then future bets would not be triggered. Place bets as close to the off as possible using a condition: Markets minutes before the off is less than 0.1
If you leave out the the Previous triggered Events status is settled condition, then all bets will be placed, but if you are using a staking plan then it may not work in your favour if a market is late to settle. A gentle staking plan would probably work favourably most of the time.