Hello :-)
What you see is the Dynamic Resolution Scaling (DRS) in action ;-)
Some new games use this feature (Red Matter 2, 7th guest, etc...).
The Quest 3 have a default system basis rendering resolution set to 1680x1760px and the games apply to this basis a custom coefficient.
This coefficient, thanks to the Dynamic Resolution Scaling can be changed on the go. Ex: x0.8, x1.0, x1.1, x1.3, etc...
As QGO redefine the system basis rendering resolution, the DRS or the game itself apply the multiplier to what QGO define. It's why thanks to QGO, the DRS is always better. But as DRS is enabled, QGO can't disable it. Anyway, QGO + DSR is the best as possible :-)
Regarding to the maximum GPU level, I implemented this feature few months ago and at the moment, nobody reported over heat or nuclear explosion :-D. And you can imagine I play a lot with all the settings and I confess I never get the over heat alert message since 3 years now o my 3 devices. As QGO don't do overlocking but only use what the hardware offer, in case of issue, the hardware is able to lower the performances to cool the system or to display you an alert to take the Quest off few minutes in order it rest a little. So yes the battery will drain faster but only a little but, not twice, perhaps 20% faster at maximum.
Concerning the remap feature, I'm note sure I can do that. I never get the keycode on the controllers but will look at that.
There is no dumb question ;-)
Thank you and have a good day