As a Dell user, not very happy with mine. Uneven backlight/bleeding, poor build quality (screen glass misaligned with the bezels, keyboard keys coming out which aren’t covered under warranty according to Dell, parts of the keyboard failing, trackpad click failing - the trackpad is integrated into the chassis so that had to be replaced) and it’s quite overpriced.

That said, some models are Ubuntu certified and get firmware updates without Windows Update

Regarding your mouse double clicking, some Reddit users suggest pressing the click button quite hard a few times…

We have a Panasonic inverting one that has a flat bed (no turn table) and it doesn’t heat evenly…