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 7800X3D, ASUS ROG STRIX B650E-F GAMING WIFI, G.SKILL TRIDENT Z NEO 2x16GB DDR5 DRAM 6000MT/s CL30, AMD Radeon RX 7900 XTX, LIAN LI EDGE 1300, Corsair MP600 PRO NH 4TB