Yeah, I have heard about those issues with the GPU passthrough as well, I was not sure if it had improved any.

I did the 2 computer thing with a KVM for many years and it just got really annoying since I only need the second PC occasionally and so I left it off most of the time.

Synergy is an option if I could find a nice low powered system that would not use a lot of power leaving it on 24/7.

I have been thinking about getting something like this to use as a media box but not sure if it can handle H265 @ 1080p.

https://www.ebay.com/itm/222923789749