Most mouse clicks react only if you _hold_ the button for some milliseconds. Instead of a normal click action.
It feels like a slow scan rate. If you hit the right time it's instant. If not you have to 'wait' for the next time slot.
It's super annoying.

Strange: It's only the left click! Right click works always fine.

PS: macOS Monterey + M1 Chip. ;)


====> Problem solved - YES! <====

I removed all Logitech 'driver' and config tools (Logitech Options and Options+). And now all runs perfectly.

====> Problem solved - YES! <====