Welcome to the Roku Community!
We understand that you are inquiring about a playback issue on The Roku Channel. Kindly provide the requested details from my post above so we can look closely at this issue, could you provide an example movie title that you experience this issue with within The Roku Channel? Are all other streaming channels playing content normally?
As a first step, we recommend performing the below steps and see if you can resolve the issue:
- Remove the channel from the Roku device
- Power cycle the Roku device, by disconnecting it from the power cable and reconnecting the device back to the power
- Re-add the channel back to the Roku device
Use these links from our Roku Support for more channel playback troubleshooting steps: How to resolve a channel playback issue | Official Roku Support
Please keep us posted and we'll continue assisting you from there.