Some of my source files are very grainy and I'm trying to use denoise. I've done this in my source project and also in some test files that I'm looking to pre-render prior to compiling into my edit.

Rendering either as MAGIX AVC or Intermediate 422 Vegas has a really hard time with this effect. Either not rendering or taking an extremely long time for a small piece (5s file) and would likely never be able to render a 4 min file.

Has anyone experienced this and recommendations on how to improve rendering with this feature?

I meet/exceed system requirements, have reset to defaults, have updated all video drivers.