any news about the project? now unreal is on v5.4.4. Don't worry about FSR. It can be done just with adding 2 files Cyberpunk FSR2.1 mod nvngx.dll in nvngx.ini into main exe dir. Since December 2023 even old GTA 5 got DLSS3 FG / FSR mod =)
https://forums.unrealengine.com/t/unreal-engine-5-4-released/1817064