@barbudreadmon Lol.. so in the end we can say that, as an example and as a test, i have choice the really BAD games ever :) ?
Anyway, I should have understood the concept and the difference between "input lag" and "delay" even better:
Input lag. In my case about "zero delay encoder" it's 16ms . If we take as theoretical and as average the values calculated by the above mentioned in thesite inputlag.science 16 thousandths of a second is pratically "zero".
What could be affected by mine "ecosistema retropie" is the presence of a possible "command delay":
The time span from the physical pressing of a key to the action of the "player" or "character"on the screen.....
Upper here we take as example 16ms... the correct order of things could be:
Press of a button -> Input Lag of hardware -> Delay of the games/character/games/emulation -> action on screen
anyway for my next arcade kit I was considering buying something similar:
RP2040 Advanced Breakout Board on Aliexpress
I was also considering buying a totally original Sanwa kit at least for around €100 but that's a whole other story.