Yes. Let's say your data grid has 200 columns, but only 10 columns (DOM nodes) are rendered in the viewport. The other 190 columns are cached.
When scrolling horizontally, column nodes are appended/preprended on-the-fly. The old ones are only removed if the scrolling stops (until that time, column nodes that are outside the viewport are just made invisible by setting their opacity to 0).
If a user scrolls really fast without stopping in between, they might have 200 column nodes in the DOM. The DOM nodes are then only removed when scrolling stops.
Performance wise I haven't seen any problems with 200 columns or more.
When scrolling horizontally, column nodes are appended/preprended on-the-fly. The old ones are only removed if the scrolling stops (until that time, column nodes that are outside the viewport are just made invisible by setting their opacity to 0).
If a user scrolls really fast without stopping in between, they might have 200 column nodes in the DOM. The DOM nodes are then only removed when scrolling stops.
Performance wise I haven't seen any problems with 200 columns or more.