Scrolling with new m5ui widgets is very slow. (MicroPython, UIFlow 2.3.6, CoreS3)

[StephenB_NZ]

I'm building a MicroPython app on the UIFlow 2.3.6 os for a CoreS3.
The new m5ui LVGL widgets are wonderful, eg List, Dropdown, that are populated with touch buttons to make the selection. If there are more options than fit in the visible list a scroll bar appears and the list can be dragged. But this is made unusable by the scrolling speed .. I believe due to the animation speed.

When I load 15 to 20 unattached strings (like with Blockly) the scroll speed is passable at first, but seems to get slower over time. The animation becomes painfully intrusive, until it is taking several seconds to ripple to a halt. I am deep copying the strings to the list, so there's no linkage or processing drag.

Is there any way to change the animation speed, or turn it off? Or any other workaround suggestions?

Thanks so much for any advice or suggestions.