Hi Dixon, thx for your response =))
I found a weird "something" too last night, check this.. i DDU nvidia drivers, install last one (again), activate windows HDR, force trough nvidia panel the colors to ycbcr(10/12bits), now comes the weird stuff..
1º if i put the tv in "pc mode/game mode(on/off, dsnt matter), i can use properly any HDR content, like some demos, mpc+madvr(hdr signal passed trough tv directly), etc.. i can even use it with windows HDR off, and auto color nvidia, and TV stills auto detect the signal flicker for a sec and put correct gamma profile, til now, all seems working and HDR looks awesome (tried too on "game console/game mode(on/off, off deactivates samsung virtual HDR, all works as intended too, since maybe, "pc mode" are messing with color 8bit/complete/limited instead of 10bits specs)
2º now, when all seems working properly, i open BFV (with windows HDR on and nvidia forced ycbcr(10/12bits) seems the only way to work), and holly molly... if i switch on HDR and properly move the slidebar etc and i have the same story, bad colors, no real hdr, all messy, and if i put aout the windows osd volume, HDR kicks in with insane gamma/saturation BUT!!, if i switch OFF the HDR and switch between resolution (like u said, and with nvidia&windows hdr on), ooops, i have hdr working mutch better than before without osd volume out and remember, with bfv hdr switched off... WTH!! x"DD i checked many times in game mode + no samsung virtual hdr... so its real, its working (not 100% correct gamma but.. much much better)
I am working now and cannot extend much more, but ill be back in 3-4 hours, ill keedp checking it and reply here again. Have a great day! :D