It’s because some chars aren’t decoded properly. & should be rendered as just &. Hinting that more than this is not properly rendered

Sometimes when you skip the credits or manually go to the next episode it doesn’t register it as watched. I figure it has something to do with the remaining time before you skip

The main issue is your 30+ Wi-Fi devices. One AP can only handle this much total bandwidth. But first, it looks like you waste 2gb of your fibre speed? Get a compatible router.

For your setup it almost looks like you’re better off with a total 10gb internal speed. And get 2 more AP, one dedicated for your smart home, one for „less important devices“ and use the ASUS for the rest. - remember to use different channels on each AP.

So in short hook your HV,NAS,PC,[new router w/ AP?],[AP2],[AP3],[AP1?] on a new 10GB switch. Split your devices over the 3 AP, on different channels

Edit: or you could get one of those for cheaper „Qnap QSW-M2108R-2C“ That is a 2.5G with two additional 10G ports so you could plug your new router into one of them and use the other for later use of the NAS if it supports that speed