Windows search bar - search "registry editor"

Go to Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}

Then to folder called 0000/0001 or whichever it is for you

Search for your graphics card name, once found click on "Driver Desc" next to the card name and change the name of your card to NVIDIA GeForce RTX 2080
(no, it wont mess up with your system or anything, all it does is just changing the name, you can change it back any time and no, you wont get banned for it)

Once done restart your PC and open the game

Im currently playing it on an old laptop with GTX 1660 TI and im getting around 60-80 fps