I agree EU default mouse sense is way to high!
I have a Razer Deathadder and Razer Synapse with no issue for my pre-set dpi's.
Maybe try Synapse again?
Or windows mouse settings.
Selling out to my understanding withdrawing the money and leaving.
Yes that didn't happen that time but giving it all away this time seems much different to me.
I don't think it was a ploy for attention in the way you are implying. Getting attention so people hear what he believes is the truth yes.
"he's done this before"
Done what, sold all his gear and given the peds away?
GL on your RL adventures EMR