@Bethgrim
Thanks for the post.
It's possible that your wireless network connectivity in the other two rooms are not as strong as it is in room 2.
For troubleshooting purposes, have you tried connecting the Roku devices to an alternate wireless network, such as a mobile hotspot, to see if they connect? If they are all able to connect, then it would appear that the issues are not with the Roku devices, but your wireless network.
Thanks,
Danny
Danny R.
Roku Community Moderator