Build 187 version 21
Tried NVidia and Intel CPUs, various processors, various computers.
Tried with and without GPU acceleration (on both Intel and NVidia)
The INSTANT that I turn on any kind of luma or chroma key, I get single digit render speeds at any resolution using Magix AVC or HEVC.
I'm baffled. There is seemingly nothing other than "it's vegas" that makes this go slow.
If I set up the same chroma in Premiere or Resolv on the same hardware, the render flies.