Hi, @FritosCornChip
Welcome!
As advised by @renojim in this thread, vertical lines are an indication of display issues rooted in its hardware.
For workarounds, it is advised to contact Sharp's support as Roku TV manufacturers provide direct support with their TV models. Refer to their contact details here: Sharp TV Support
Hope this will be addressed soon.
Thanks,
Roku Community Team
Takashi O.
Roku Community Moderator