Skip buffered rows rendering on long scroll

[rtrg]

Expected Behavior

Scroll bar shouldn't lag behind mouse pointer

Current Behavior

When I scroll from top to down using scroll bar (for 1000 rows), buffered rows is getting rendered ~7 times, even with allowCellsRecycling and pureRendering, scroll bar lags behind mouse pointer.

Possible Solution

When scrolling is in progress and scroll length is greater than some threshold (ex: number of visible rows height) don't render buffered rows and just return empty div in FixedDataTableBufferedRows (gif in expected behavior is generated with similar change) until scroll is stopped

Your Environment

• Version used:
  "fixed-data-table-2": "^1.0.0-beta.12"

[wcjordan]

I'd consider a PR for this.

[wcjordan]

Hey @rtrg now that we're revamping the scrollbar API and should be able to support native scroll, do you have any ideas for what we can do to improve this?