Quoting: GerarderloperI hope Valve shows us some OVERHEAD hit for all these, especially x86 via FEX

I want to know how badly these translation layers are going to EAT up CPU/GPU resources as they do their thing.

People have already been running x86 games on their arm phones for a few years, if you want to see how they perform simply search for winlator/gamehub gameplay on youtube, the steam frame used the snapdragon 8 gen 3 so thats what you want to look at. You can natively on device play modern AAA games like E33 with it but the performance won't be great (720p, 15~ avg fps)

Lighter games often run very well, something like monster hunter world runs at a stable 720p 30fps. The frame will likely be even more optimized.