I know a guy who tried multiple switches in a row and came to the conclusion that the magic number and "sweet spot" was three of them.
Hello - was the the 4 video series I did where I tried 15 different cheap switches in addition to stacking them?
If so it's important to note that 3 was indeed the magic number, however I did not use three of the same switches as it was "too much of a good thing".
After trying literally dozens of combo's I found (for me in my system) the magic combo of three switches (total price about $200).
Then, I notice a significant improvement by plugging them into an old AudioQuest power condition I had laying around $199 on amazon).
Finally even to this day when I test expensive switches (I currently run a Telegartner Premium M12 switch feeding into their OPT BRIDGE) the trifecta of the cheap switches adds SIGNIFICANT performance to my system.