Scroll is sluggish on IE 11

[solenoo]

Hello,

I'm using this component in a project, but I noticed there's some problem with the scrolling on IE 11. It seems to be very sluggish. You can check it on the demo as well. I didn't see any scrolling issue with neither infinite-tree or react-tiny-virtual-list.

[Thalandor]

Could you find the reason, or even solving it?