Hi @Michael_Bade,
It sounds like there is something wrong with your Macbook Pro’s hardware if the video card is also having difficulties, other areas of the Macbook may not be performing as expected as well.
I had a similar thread where we performed extensive troubleshooting only to later find out that the hardware was causing strange issues in Roon:
My suggestion here is seeing if you can borrow another laptop from work or have a friend bring theirs over to your house. If things are stable in the same networking environment but with a different core, I believe the laptop may be at fault.
– Noris