Hi,
I was thinking it might be the problem, but i was testing different trigger with 8 markets per one game and it is working mostly fine.
So for this one:
5-20 markets, refresh rate 0,20 (it looks like it gatheres somewhere some data and it becomes too heavy - even though markets are deleted - blind guess)
But refreshed markets if no bet, then are deleted after 10 minutes.
Second trigger without issue handles 24 markets (8 markets for 4 games) in the same refresh rate (that trigger that i requested for learning) and sometimes more, but I can confirm 24 was working without issue. Here no markets are deleted.