Scrolling is really choppy in Safari, shows white during scroll in Chrome

[mmgoodnow]

I've been noticing some pretty choppy scrolling in Safari, even in lists with 60 or so items.

I noticed you implemented windowing in 6c1b44b and I think that could have something to do with it because I don't remember it being this choppy in the old jfurrow version. I understand that that's a performance optimization though.

I checked it out in Chrome and while it's not choppy, the list items that were previously hidden are white while I scroll.

Is anybody else noticing this problem?

[jesec]

I failed to reproduce the issue. I regularly use Flood on my iPhone and Mac. There is no issue.

Can you upload a video or screenshot to demonstrate what “choppy” means?

[mmgoodnow]

I'm using Safari for the Mac, problem doesn't happen on my iPhone.

I'd rather not upload a video, but basically it's low FPS. Really noticeable for me when I scroll the (both condensed and expanded views) table at a slow-medium pace and watch the torrent names, then go to a different page and try scrolling there, the node docs are buttery smooth in comparison.

Obviously it's not much of a problem; it's not inhibiting my workflow at all, just a minor annoyance.

[jesec]

There are fair amounts of rendering and reconciliation involved, so definitely it would be slower than a static page like documentation of Node.

[jesec]

Flood already has a state-of-the-art implementation of list handling. I don't think it is possible for me, at this moment, to do more about the performance of list.

I did a performance profile. All rows are properly memoized. There is no wasted render when I scroll the list.

I think Apple does not implement smooth scrolling in macOS version of Safari. Thus, the perceived scrolling performance can be worse than anticipated. Safari on iOS feels much better.

[Wonderfall]

Yep, I can confirm the issue on Safari 14.0.3 (macOS Big Sur, 2018 15" Macbook). No issues whatsoever on my iPad Air 4.
(Unsure if it's related: Safari, at least on macOS, lacks implementation of scroll-behavior: smooth.)