Slow left-right scrolling (if many columns exist)

[asakura42]

[peterhs73]

I am not sure if I can replicate the issue, can you share your environment (python and qt version)?

I do notice that the scrolling is "choppy", this is possibly due to large scrolling pixel count. I will look in it soon.

[peterhs73]

I was able to change the scrolling per pixel, and it is indeed slow. The main window scrolling is controlled by ScrollArea(), which needs further tweaking.