Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
Seems like the prevailing thought is that this has to be enabled by the app. But I'm not sure that is the case. Why couldn't there be a master setting, similar to the hidden bitrate menu, that sets the playback speed on all video at 1.25, 1.5, 1.75x, etc? If that were the case, it would be transparent to the apps, and just do it at the system level.