why are apple TVs running slow ?
play lists too long ?
drive/memory too full ?, not enough head room, for efficient operation ?
electronic devices do not get mechanically worn out (well drives can fail)
they get 'over burden' with to much clutter
i too, recommend wifi capable android box with kodi, networked to your server
perhaps a 'personal cloud hard drive' ?
can't help with a router recommendation, i too need to go this route
only one TV and one laptop, but 3 external HDD and a new segate 8TB backup hub, i need to connect, as my 3TB primary is almost full and 3 years? old