Smooth scrolling speed difference at higher FPS

[r37r05p3C7]

https://f95zone.to/threads/f95checker-willyjl.44173/post-13157234

Mouse wheel scroll Up/Down seems to be asymmetrical with Up being ~x2 more powerful than Down when Smooth scrolling is enabled.

Played around with the Vsync option, and at 1:1 of 165FPS the up scroll is significantly stronger, while at 1:10 of ~16FPS the difference between scrolls is still there but becomes negligible.