I highly respect your choice, but I cannot avoid to consider the added input lag of PC HDR Standard so marginal that most people wouldn't even notice compared to HDR Game.
If I hadn't read it here on Era when someone pointed that out, probably I wouldn't have ever noticed even switching back and forth from PC SDR ISF and PC HDR Standard!
Another bizarre thing is that when measured with proper equipment (as
DOTDASHDOT already did), the new PC HDR Standard still gave a results of 21ms, same as regular HDR Game, but still "felt" a bit higher to the most sensible people on this matter.
Plus, when X1X is set to 4:2:2, those same people say the added input lag is gone, and PC HDR Standard feels exactly the same as HDR Game (with the major drawback of ugly color banding everywhere).
This makes me think that this extra bit of lag is probably added by the console itself rather than the TV (that has now a fully fixed PC Mode after over a year), as probably something's going on console side when outputting native 4:2:0 YUV @ 10-bit signal instead of re-convert it and upscale it (as happens when enabling 4:2:2), when on PC Mode.
In the end, this means that even if very marginal as of now, this extra input lag could be totally eradicated with just a new Xbox Dashboard update rather than a new webOS firmware update, with no need to change TV settings again.