When having a research which increases the stack size beyond 4 total (modded planets or trough eg https://mods.factorio.com/mod/infinite-belt-stacking-fg) the stack miniloader ignores the increased stack size and still stacks to 4.

Bump - same issue using Infinite Belt Stacking (FG) by Buggi

Yes. This is currently hardcoded. I am not using those mods and using larger stacks will severely throw of the speed calculations.

I just spend four grueling weeks trying to get the speeds right for the mods that the loader supports and I more than once cursed the moment when I chose to take on additional mod support. I have no plans to revisit this any time soon unless there is a "ready-to-merge, tested PR" that does not throw off all the currently supported loaders.

Sorry, but I really do not want to see factorio mod code for a while.

All good. Had no idea it was this challenging to address. Thank you for all of your contributions :)