Has anyone succeeded at running any games at 2x resolution at a reasonable speed? Even on an overclocked Pi4 doesn't seem up to this. This is certainly an emulator that will grow in usefulness as the capability of Raspberry Pis increase although I think I will probably stick with PCSX Rearmed in the short term.
I have been running a few games (spyro, ff1/2, crash bandicoot, ONE) at 4x res, with 32x msaa at over full speed (Vulkan hardware rendering). My pi4 is overclocked, but pretty much stock RetroPie.