I am doing turntable renderings with Visualize Pro. Most of our machines work fine and I can render without any issues. The last two are giving me a bit of a problem and I cannot figure out why. I am pretty new to Solidworks so any advice is helpful. 

1. The top of this machine disappears on and off between each frame. It seems it is not fully rendering the model in every frame. I originally thought it was the number of passes so I increased it from 100 to 250 and finally to 1000 and still got the same results.

2. This machine's rendering is pixelated about every other frame. I thought it was the denoiser so I ran it twice, again at different passes, with the denoiser turned it on/off and there was no change.