Perhaps, that's why I finally understand why I'm having so many graphics issues, stuttering, poor frame rate, even with a RTX 3090, I just saw the 32x9 aspect ratio doesn't even supported resolution. If it's true, can KW studios fix this issue? if not, then I guess, it's game over for me, thus making me really mad since I purchased everything in this title. Another reason why they must upgrade the crappy DX9 ASAP!!
The file named supported_resolutions is here C:\Program Files (x86)\Steam\steamapps\common\raceroom racing experience\Game\GameData is not updated since in game, such aspect ratio is supported. it's the 5120x1440 resolution that is NOT supported and doesn't work well, but the 3120x1080 works like a champ. I just lowered my resolution on my desktop.
As an offtopic, do you have any issues with how the game looks? I mean this monitor is quite heavily curved, so if the game generates a flat picture and it's shown on such a curved monitor, it might look distorted on the far left and right sides.