Major Chromecast Casting Issue

[Chiakuu]

Hello. I have a chromecast issue that has been plaguing me for over a year, progressively getting worse, but apparently I am the only person in my house with the issues. Whenever I try to cast something, whether from Youtube or Twitch or somewhere else, it will lag. The audio and video will either freeze for a moment and go completely out of sync, or the video will just stutter constantly. But only I have this issue from any device I own; my family has zero issues casting. My 6th gen iPad has this issue, my iPhone 7 had this issue, my iPhone 11 Pro Max i just got has this issue, and I think my Win 10 computer has this issue - every device I have tried. My mom casts from an iPhone 8 Plus, the 7th gen iPad, or her Win 10 computer - it works fine. My sister's iPhone 6 works fine, her iPad mini works fine, my dad's iPhone 8 works fine, and so does his ipad mini.. Any ideas?

 

Chromecast: This is an early chromecast, perhaps first gen, running Firmware 1.36.159268. I set it up under my account. We have fast internet here, and the videos play fine natively on the device I am trying to cast from.

 

Thanks