In that post, I mentioned an update in r417 that may help, but nobody has responded to that yet - it'd be interesting to know if it made a difference for anyone.
WV2 export still doesn't use the discrete GPU, unless i export with --force_high_performance_gpu arg, which, as i mentioned in the post, seems to add an odd janking/stuttering, which is hard to notice but i can guarantee is there for me.
The only way to fully and properly use the GPU on WV2 for me is to mess with the Nvidia settings and set the WV2 exe (the one in programs/microsoft, not the exported one) to "use full power".
Still like that after 417.
On NW.js i can just rename the exe to "run_game", now i can try the tool
dop2000 post mentions, which is probably even better.. i'll report back.