well, a big ole TV is a horrible WiFi barrier, so there’s that.

Sorry i don’t have any advice on your original question, but in my opinion, pick up an older model streaming device (don’t get a 4K one, get a 1080p max one) and you will probably solve all your problems.

I recently got the Roku 2 Streaming Media Player (4210R) with Faster Processor (2015 Model) back when it was under 60 bucks, looks like they are price gouging right now… seems to play anything just fine.

Can you monitor the bandwidth being used from your router? just a thought. perhaps the Vudu stream really is that much larger and is maxing out your internet, and not actually a processor speed issue?