Earlier quoted context omitted.
If your mouse starts double clicking, play a game of Quake 3 for an hour, or just click a bit more aggressively for the next hour. It clears the problem, per my experience. What I understood is, the switches on these mice (I have G700) are practically abuse-proof. However, they don’t like to be used lightly and start to glitch possibly from fine dust. Using the switches more aggressively cleans them up. My first gene…
Their switches are just crap. They use Omron switches mostly due to their low cost, even on supposedly "high-end" mice. People routinely replace them with better alternatives (e.g. TTC Gold or Kailh, but there are lots of them) and get years of heavy usage after that without any problems. The switches can be obtained on aliexpress, you do need a soldering iron though.
But that's only me, of course.