I can confirm - I tried to export a simple 8 seconds clip from DR17 and Voukoder with ProRes is super slow compared to native codecs.
Export takes like 10 times longer than in Grass Valley HQX or Cineform.
Do you have any suggestions on the best settings for the lossless roundtrip to Vegas Pro?
Also, it would be great if Voukoder could support MagicYUV codec. Is that possible?