https://www.reddit.com/r/pokemon/comments/dxc5yg/psa_pokemon_swordshield_causes_roku_devices_on/
tl:dr Seems the local ad-hoc mode is messing with some roku devices. Whatever packets the switch seems to be sending out appear to be messing with the rokus and causing them to enter an endless boot loop. Putting the switch in Airplane mode seems to be the current workaround.
I have a TCL Roku TV and have yet to have a problem my self but it seems to be enough of an issue that its finally got the attention of the Roku team on Reddit.
So last night, the Rokus in the house began acting up. Looked on Twitter, some others were having the issue with Roku TVs and the like. Theory was was that Roku pushed an update and bricked people's devices.
This morning, the Roku was working again. Then stopped.
Then I found this and the guy's solution, which was to put the Nintendo Switch in Airplane Mode while playing Pokemon.
Last night, my wife began playing her copy and had just started playing again when I began using the Roku that morning. I power cycled the Roku to no avail. Then I decided to try the guy's fix, as ludicrous as it sounds (my wife and I both have backgrounds in software development, so it sounded possible but unlikely).
I had my wife put her Switch in airplane mode and power cycled the Roku. Booted up first time, has remained stable all day. No updates from Roku were pushed to Roku devices that I can ascertain from the System Update menu.
saw something on /vp/ about the issue but I won't link cuz 4chan. Someone says they ran a Bluetooth diagnostic and claims the Switch is trying to pair to the Roku (that's how the Roku remotes work). Not sure how much sense that makes with Airplane Mode as I am not home to test. I am posting this here for the benefit of the Roku devs who may be following the trail to fix it and can't find it in the netcode. Still the same issue, the Roku is getting signals from the Switch that are crashing it.
tl:dr Seems the local ad-hoc mode is messing with some roku devices. Whatever packets the switch seems to be sending out appear to be messing with the rokus and causing them to enter an endless boot loop. Putting the switch in Airplane mode seems to be the current workaround.
I have a TCL Roku TV and have yet to have a problem my self but it seems to be enough of an issue that its finally got the attention of the Roku team on Reddit.