Exactly the title, the scroll speed seems to be very slow in the menu when using the scroll wheel and I am not sure how to fix it.

This is down to minecraft's scrolling, I might implement custom scrolling. But this is YACL issue.

It's much slower than in vanilla.

I believe minecraft's scrolling speed depends on how much there is to scroll. I'll look into bypassing this with a constant scroll speed.

I believe minecraft's scrolling speed depends on how much there is to scroll. I'll look into bypassing this with a constant scroll speed.

Nope, Minecraft uses a constant scroll speed. At least it did last time I checked. It scrolls based on the entry width / 2.