i don't know if this is a bug or because this version is free but Vokouder r2 beta3 is extremely slow compared to previous beta1 and beta2.
previous version can export a 6 minute video timeline with grading and PP in under 1.30 minutes.
settings used in both Vokouder r2 b2 and b3
with vokouder r2.0 beta3 the same video with the exact same settings require about 8 minute to export and the gpu utilization is 20% compared to 95/98% from the beta2.
g=15 gpu=0 preset=slow profile=high qp=1 rc=constqp
mp3 320 mkv
Premiere pro v 13.1.3
rtx 2080ti 419.67
AMD Threadripper 2990wx
128GB DR4 3600
Windows 10 ( without april update ).