

Sounds ambitious! Good for you for diving right in.
I’m no expert but I would look at your home internet speeds/capabilities. Most home packages are optimized for download, and if you are self-hosting a streaming server you may a differently provisioned service to support that. If the download to upload ratio is heavily tilted towards download then I would look there first. It sounds like you are able to stream outside your home network, just slowly.
Everything else is waaay beyond me in terms of establishing a secure perimeter and allowing in only desired traffic. I self host a few servers on proxmox, but it’s strictly limited to my home network.

Keurig coffee maker. Tried to descale it per the instructions and it just quit. It was fixable though - turned out there was a blockage in one of the intake lines, so no water was getting to the heating element and the thermal breaker was tripping, cutting power to the whole thing. YouTube and other posts were helpful, and it sounds like this is not uncommon, esp if your area has hard water.