We’ve really gotten off topic here. I didn’t mean to take us down this road.
PD, I don’t in-game downsample to reach 3100. I start with 3100 in Steam and then down sample into around 2400 in game (I think this is what it is). Right now, I am at 70% of in game rendering scale if I fly from Biggin Hill to London City (for example).
Regarding the console, I am not fully clear on the rendering pipeline, so I leave mine on extreme. But regarding yours statement of restarting MSFS, one thing it does that is nice is let us ctrl-tab in and out of VR. So, when you need to change Steam VR settings, just ctrl-tab out of VR in MSFS, then make your Steam VR changes, restart Steam VR and the Vive console, then ctrl-tab back into VR. I never restart MSFS, unless it crashes.
I just read your second post. Great! You can now go in-game and play with graphics settings. Truth be told, if you are flying over a city like London or Manhattan you may need to lower render scale, rather than if you are flying high or just flying over open land.