I'm at the end of my rope with this Chromecast...

I'm having a hard time finding a pattern, but there are times when the buffering on the UI and actual shows/content get so bad that the device is unusable. It seems to happen most on Saturday/Sunday mornings with Disney+, and in the evenings with other apps like Prime Video, Netflix, or HBO. Basically peak use time, so not ideal. My 3yo is also very annoyed haha. I've done a bit of searching around here to see if I can pinpoint the issue. Here's what I've done:

-Moved wifi points for better signal (signal strength is always "excellent" now)

-Removed apps to improve free storage space (I've never actually ran out of storage. I keep ~ 5-8 apps)

-Changed DNS to Cloudshare (caused the device to lose wifi connection so I changed it back)

-Swapped the device with another CCw/GTV that I had in the garage (the issue didnt follow the device)

-Force stop apps, clear cache, restart device, uninstall and reinstall apps

-Cast from my phone to the device. (phone will play the content no problem, but casting still results in endless buffering if it even works at all)

Note that everything else in the house works fine. Plays content without issue. Its just this one device that has the problem, even after switching devices. I'm about to toss them both and get the Onn devices from Walmart.

Thanks for any help or direction.