A lot depends on the game too. Some games are naturally slower movement, slower to swing a weapon, etc. In those slower paced games, some added input lag can be unnoticeable, while feeling like a major issue in a more twitchy game.

It’s also worth mentioning that the popular lsfg frame gen option doesn’t work this way, unlike baked in frame gen, the game engine’s ability to accept input isn’t delayed at all since the additional frames are added after. This means the generated frame quality is lower, but input lag is much less on most games.