Voukoder render times longer than usual

Hi!

I'm using Voukoder plugin almost 2 years. The render time was normally half of the video duration with NVENC HEVC option (I have RTX 3060 laptop gpu). And NVIDIA Studio Driver instead of Game driver.

6 hours of duration video would take est. 3 hours to render with Voukoder plugin. But recently, it is changed.

Now it takes 7,5 hours of render time for a 6 hours duration video. What happened?

Here is an example. It is rendering for 6 hours, %80. Est. 1.5 hours left to %100.

Thanks in advance.