Voukoder isn't rendering using my gpu

Strange. It clearly sees your GPU. I did it with the exact same settings on my 1050 and it worked.

In case media is an issue (Vegas is failing to send frames to Voukoder), could you try with just generated media or a picture or a benchmark project?

Try update GPU driver (clean install, recommend using nvcleaninstall.exe).

Try disable Resizible BAR if you have it enabled

Try use OBS (the only software I know has NVENC option) and see if that could get GPU encoding up and running

Note: GTX 1650 super uses TU116 chip and should be running Turing NVENC engine, maybe encoding was confused with some GTX 1650 with Volta NVENC engine, I'm not very sure about this