Hi @Psyfurius & all,
I have a strong dislike for wireless mice.
At first, everything worked just fine, until one day, the cursor on my monitor started to live a life of its own. It turned out that my wife was changing TV channels upstairs - using another wireless mouse - which my mouse’s receiver gladly picked up downstairs, and her wireless keyboard also interfered with mine.
Seems as all Logitech wireless devices use the same frequency, which means that you can just operate one set in the same house or so.
From that day on, I only use wired connections.