I just finished a set of videos, 7 in total spread across 3 different computers at the same time. I ran separate instances for each video so 2 videos on a RX 6600, 2 on a RTX 3060Ti and 3 on a RTX 3060. Length of the videos varied from 1hr19mins to 2hr3mins. All the videos were old movies that I had captured between 2004 and 2010 using a capture card. All were either 240p or 360p AVI(Xvid) with Mp3 audio. I used Proteus Auto for all as the videos were not that great as you can imagine and I was just after a watchable video that was clean of compression artifacts which the originals had plenty . So no preview needed. The output was set to ProRes 422 LT and copy for the audio. I used custom scaling to bring each video to a width of 1280. They all finished without a crash and all within 6 hours. Some finished sooner of course but they did finish. The video cards were each running around 75-90 percent as indicated by the power draw of the cards. CPUs usage varied but none more than 50 percent, 5600x, 5700G and 3900x. System memory use was very low with each computer.