Hi @Windancer2,
Thanks for posting here in the Roku community!
Please be advised that the four columns of channel tiles are part of the new update to Roku.
We appreciate you providing your feedback regarding this. Meanwhile, please try to restart your system by going to Settings > System > Power > System restart (if you do not see a Power submenu, skip to the next step) and see if it will fix the buffering issue.
Let us know how it goes, and we'll be glad to further assist you.
All the best,
Eunice
Eunice L.
Roku Community Moderator