Chances are that coax cable is old as hell and would probably cause you far more trouble than it’s worth. You should run an ethernet cable.
An ethernet cable solves all of your issues. I’m not sure why this isn’t the first solution you thought of.
Synology diskstation. 220+ or better is a good starting point.
I think you only got this because you are the server owner, which you already have access to all that info.
A mesh system is the only realistic way unless you run cable. You get what you pay for. 200 bucks for a deco mesh is a deal.
Stop being a cheap ass.
No. Why on earth would you?
Your sweet rips of 1080p tentacle hentai are not that important.
You need to disable transcoding because you have no GPU to offload it to.
Problem is, you can’t disable transcoding in jellyfin.
Should have used Plex tbh.
Shielded Twisted Pair (stp) is your friend. Running a long the power line (especially of an HVAC unit) is probably going to introduce a lot of noise.
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Go buy a decent gigabit dumb switch and donate that shit to a museum.