Thats why I did a year ago this https://www.youtube.com/watch?v=fLPagwYhxeU and the point of that video was to show that all 3, snap, deb and flatpak had the same performance and even at that moment, I was expecting snap to have it worse.
What happened? Snap had double and sometimes triple the performance versus deb and flatpak. Note, it was only using CS2 at that moment, mainly because using deb I was having such low FPS performance when using the RTX 4090 that I got curious to see all 3 at the same time.
The 1st video was https://www.youtube.com/watch?v=2FBnTa33jSQ and on both, DEB and Flatpak, basically a year and half later I still get CRAZY stuttering. input lag, spikes, etc… On Snap, I never had them except after the CS2 update that happened I think a month ago. The solution was a GRUB change as mentioned in the video about it on the youtube channel and that was all.
Currently snap is shutting me up (I reckon since 2023) and the only complaint is the lack of full mangoHud support. Thats all.