I downloaded and installed CUDA 11.1, but still getting errors :(

2020-09-24 10:24:58.406 Iray INFO - module:category(IRAY:RENDER): 1.1 IRAY rend info : NVIDIA display driver version: 456.43 2020-09-24 10:24:58.406 Iray INFO - module:category(IRAY:RENDER): 1.1 IRAY rend info : Your NVIDIA driver supports CUDA version up to 11.1; iray requires CUDA version 8.0; all is good. 2020-09-24 10:24:58.421 WARNING: dzneuraymgr.cpp(307): Iray WARNING - module:category(IRAY:RENDER): 1.1 IRAY rend warn : CUDA device 0 (GeForce RTX 2080 Ti): compute capability 7.5: unsupported by this version of iray, please look for an update with your software provider. 2020-09-24 10:24:58.421 Iray INFO - module:category(IRAY:RENDER): 1.1 IRAY rend info : Using iray plugin version 4.6-beta, build 287000.7672 n, 23 May 2017, nt-x86-64-vc11. 2020-09-24 10:24:58.421 WARNING: dzneuraymgr.cpp(307): Iray WARNING - module:category(IRAY:RENDER): 1.1 IRAY rend warn : GPU 1 (GeForce RTX 2080 Ti) with CUDA compute capability 7.5 cannot be used by iray photoreal. 2020-09-24 10:24:58.421 WARNING: dzneuraymgr.cpp(307): Iray WARNING - module:category(IRAY:RENDER): 1.1 IRAY rend warn : There is no CUDA-capable GPU available to the iray photoreal renderer.