Dell MS900 Mouse slow scroll glitches?

Hi

Does anyone have a Dell MS900 mouse and can try the following please? 

Vertical scroll slowly on any scrollable page, is scrolling smooth or is it glitchy?

I've tried 2 MS900's now, one with manufacturing date Nov2024 direct from Dell and another with manufacturing date Sep2024 from Amazon, both with the latest firmware via Dell Peripheral Manager, and both exhibit a frustrating slow scroll glitch where scrolling hangs and then catches up.

I've tried both mice using the provided wireless dongle, and also with my existing dongle that was supplied with my KB900 keyboard, and also via Bluetooth. Tried all 3 methods on 2 machines - a Dell Inspiron 7420 (dongle plugged directly into the machine) and also a self-built gaming desktop running an i9 14900K with 64GB RAM etc. and behaviour is the same. 

The latest mouse also exhibited the same issue before updating to the latest firmware. 

I don't see this issue with any other mouse, just these 2 MS900's.

Anyone else have this issue?