I don't think the mouse is the problem, but maybe the computer (RAM, graphics card - refresh rate). I have had similar problems with small computers with little reserves. It could also be that there are a lot of peripherals connected to the computer and a Bluetooth/Unify mouse is not working properly because of this. If possible, I would not plug the Unify adapter into a USB hub (e.g. on the screen!).

Then simply contact Digitec customer service directly and ask for a suitable cable. Once again, Digitec has made a mistake. -----8<------------------8<------------------8<------ Digitec is obliged to supply electrical appliances with a Swiss plug. If the appliance comes with a foreign plug, a suitable replacement cable should be supplied if the mains cable is pluggable or, alternatively, a suitable adapter if the mains cable is permanently connected. If the appliance is delivered without a suitable plug, complain to the customer service and insist on a cable or an adapter, free of charge.

In the default setting, yes, but you have to search for your icons with a magnifying glass. But you can adjust the scaling in Windows (and probably in every other modern OS). This way, icons and texts are displayed larger without looking washed out. Works fine for me with 150%.