It seems a common trend sadly. Either your mouse lasts for many years without any issue (like my previous Logitech G700S), or they start doubleclicking after less than a year (like my current Corsair Core RGB Pro). And buying a premium/gamer mouse is no guarantee there - those mouses rarely reach the specified number of clicks before they start having bouncing issues. In some case it might be bad software causing it however (as debouncing is typically handled in software, unless it gets really bad).
Funny story: I ended up fixing the double click issue with a drop of WD-40. It has been close to a year since that fix, and not only is my left click now quieter, it has never had any double click issue again. Kinda unexpected, I would have expected contact cleaning fluid to be more likely to help, but I didn't have any at hand. It was a last ditch effort, as I was ready to pull the trigger on buying a new mouse.
Interesting, as I was considering going with an optical switch mouse from Razer when my Corsair started having issues. It feels that different from mechanical switches?
They use those cheap switches. Because they make us buying more mice. Premium or gaming mice are same. Most of my mice are Premium or gaming mice.
The problem is not related in mouseware but switches. I had G700S long time ago. It's using 'D2FC-F-7N OMRON(made in China)' 20 mil switches. Durability is bad. OMRON(made in Japan) D2F-01F 5mil is better than D2FC-F-7N.
I don't recommend WD-40. Sometimes it works. But sometimes it doesn't wok. It corrodes copper parts in the switch actually. I recommend you this. I use this.
https://www.amazon.com/dp/B01LXIJEYQ/?tag=snbforums-20
But it only works for shot period. I use it only for Nintendo Switch Joycons and XSX controllers. Switch replacement is the best. There is bad and confusing switch marketing tactic. For example, they say '10 mil click'.
'50 mil click'. It does not real 10 mil clicks. There is a condition to do so. 50 mil click under 60 operations/min. There is an OMRON(made in China) switch which has 50 mil clicks. There is an OMRON(made in japan) switch which has 20 mil clicks. Interestingly, OMRON(made in japan) 20 mil is
far better than 50 mil OMRON(made in China). The best OMRON(made in Japan) is D2F-F-3-7. Second one is D2F-01F, not great but good.
I don't like Optical switches. I have some Razer Viper and ASUS ROG mice models which are using Optical Switches. Durability is great. But it makes strange noise. It's hard to explain. The sound is like clicky metal sound? Some people like it. Try it. You may like it. I don't guarantee.
Razer Viper Ultimate Wireless without a garbage charging dork was $52 something last week. Also you may try ASUS ROG Chakram Wireless. There will be a newer version of Chakram Wireless which is Chakram X Wireless in a month. You don't have to solder the switch. You can just replace the switch with your fingers. It supports
both normal and optical switches. No soldering needed.
ASUS ROG Keris Wireless is good except a wheel and asymmetrical design
. Small and light. You can just replace the switch with your fingers too.
However it doesn't support Optical Switches.
I have dozens of never opened Boxed mice...