I have found a workaround for Fallout New Vegas on Nexus mods. You just download a d3d9.dll file and put it in the game folder. This did not work for me on Epic, but it is working on GOG and Steam. Also, they did include Fallout in the coming fixes in the driver release notes for 24.5.1.
Ryzen 7 7700X, MSI MAG X670E Tomahawk Wifi, Corsair DOMINATOR® TITANIUM RGB 2x16GB DDR5 DRAM 6000MT/s CL30, AMD Radeon RX 7900 XT, Corsair HX Series™ HX1000, Corsair MP600 PRO NH 4TB