

At least in my case, my DOC IS 3.0 modem was having connectivity issues. My neighbor in another apartment had similar issues: dropped connections, slower than expected speeds, etc. Switching to DOCSIS 3.0 modems solved the problem. I guess Comcast upgraded their hardware and it wasn’t compatible with my modem anymore
Here’s what I did: I bought a $50 Dell Optiplex desktop with a 4th generation Intel CPU on ebay. I stuffed in 3 HDDs from ServerPartDeals and a boot SSD I had laying around. This machine draws 50 to 60 watts continuously.
I got caddies for the HDDs from my local used computer parts store. I got 5.25 in to 3.5 in adapters from Amazon.
I added a 10 gig SFP+ card (which isn’t fully utilized since my network is mostly 2.5 Gig). Realistically, the onboard gigabit port is adequate.
I got a SATA PCIe card so I can add a 4th drive if needed.
I also bought a Nvidia Quadro P400 graphics card (similar to a GTX 1050, but half the price) for $30 on eBay for Jellyfin transcoding. I couldn’t get the onboard Intel GPU to play nice with Jellyfin.
Excluding the cost of the drives, this setup cost me about $130.
Tailscale works pretty well, but I usually use Wireguard to connect to my router remotely. I’ve had issues getting Tailscale to work well with my reverse proxy, but I suspect that’s a me problem rather than a Tailscale problem. I have OPNsense and Adguard running on an ancient Mac Mini that serves as my router. (If you follow this route, make sure you get a Thunderbolt Ethernet adapter, not a USB one.)