Netflix freezes after 5 seconds
My new Roku Ultra will often freeze both audio and video on Netflix after about 5 seconds. I can still select another show, and it will play for 5 sec then freeze. This doesn't appear to happen on other apps, Paramount+ for example works fine.
So far I've tried resetting the Roku by cycling the power (it's powered by the wall wart not usb), factory reset, deleting and reinstalling the Netflix app with no change. The one thing that sometimes works, is to power on reset the Roku, my modem and my router together. Sometimes this works after 3 or 4 tries. If not, I just give up, and it might "fix itself" a few days later.
More info: Netflix app V5.2, build 1200.96022.
Roku model 4802x ultra, s/n X01000TRCMP5, software 12.55 build 4174-C2.
This is making my Netflix experience pretty negative, hope you can find a solution.