Yes it's me.https://4pda.to/forum/index.php?showtopic=939714&st=11700#entry113956220
I think it's the guy who does the GTA mods, he made a resolution mod for Kirby so it will run 60fps on an overclocked Switch.
He did mention that disabling the double buffer would probably help but he hasn't done it.
I see references to double buffering in files and some frames limits, but I couldn't turn it off. I hope there are people here who can. Therefore, I did not publish my mod here (I don't like downsampling to 540p).