rFactor2 is well worth trying, for historic racing if nothing else. Hay bales, spectacular crashes with fire and smoke, telephone poles whooshing along the road of historic Spa... Quite an experience in VR
Its AI is known to be the best in business too, it will attack and defend mixing different lines.
RF2 is ACC's antipode graphics wise - does not look too hot on the monitor, but somehow transforms nicely in VR. The picture is clear and runs at 90fps most of the time at max settings. Physics and force feedback are top notch, rF2 being one of the "big 3" consumer simulations - iRacing, AC and rF2. Max Verstappen used to spend 3-4 hours a day in rF2 to give you just one endorsement