With successfull implementation of CUDA HW acceleration into ReShade, I believe, it should relieve GPU usage for post-processing and thus generally improve fps with demanding sharders. It´s used widely for it´s processing power, so why not use it here ?
C++ or .NET C# can be used here. With Easyhook, things could go quite swiftly. But this is really a just suggestion I came up with.
Eh, no. You have a big misconception of what CUDA is. CUDA is NVIDIA's GPU architecture. It's not some separate thing on the HW board. 3D rendering runs on the same HW cores that CUDA programs do. It wouldn't relieve anything, only increase GPU usage and make things worse. ReShade already runs all post-processing and rendering on the GPU, only command scheduling runs on the CPU, which it has to do.