Scrolling slow when file(s) selected

[Hacker]

Hi,
TC x64 9.51 on Windows 10 x64 v2004.
I have a Branch view with ~21500 files. I am using Brief view.
Scrolling left or right through the columns using the cursor keys works normally.
However, if I select some files (one is enough), the scrolling is about 4 times slower (scrolling from the first column to the last column by pressing the right cursor key takes 42 seconds instead of 10 seconds).

Is this easily reproducible, please, or do I need to dig deeper?

TIA
Roman

[Ovg]

Confirmed.

[petermad]

I can confirm this too, but not with such a big difference. The time also depends on the number of columns to scroll through, but with 30.000 files and with 33 visible rows (= 910 columns) it takes 31 seconds with zero files selected and 56 seconds witn one file selected (the first file).