I would put in mestastock 11 wishlist an option in the system tester to run the tests loading data bar per bar to not let to zig zag based system to give fantastic results.

Loading data day per day would simulate the reality, of course the simulation will be slower but it could be acceptable giving to the user the chance to consciously choice this "anti zig zag advantage mode".

A slow result it's a lot better then a fake result!