Hey!
It depends on many things…
If you are using Portfolio EAs, do you use the method that Petko teaches in the course to remove the losing strategies from the code?
I would avoid trading AUDJPY and AUDCHF, try with the Major currencies.
And third, I monitor the last 1 month, the last 2 weeks, and the last 1 week. If I keep the EAs above 1,2 PF, I would remove them if I see lower PF on any of the 3 periods.