Solving playback issues

[Diggy]

I have three Roku Ultra 4800Xs with a 4K GoogleTV,  4K LG, and also a 1080 projector. This issue exists on all of them. 

The streaming quality using the Roku Ultra is very poor compared to the native apps on the TV. Netflix, Prime Video, Hulu, HBO etc all of them look so much better using the app on the TV. To the point where I don't even use the Roku Ultra anymore! Once you notice the quality difference, you can't unsee it. 

Display Type setting: 4K TV or 4K Dolby Vision HDR

Software: 14.0.4

When using the Roku, sane streaming service, same show, same part of the show, the difference is glaring. Especially darker scenes, the Roku makes the shadows big blocky square chunks, as if the stream is highly compressed.  Meanwhile, the native apps on the TVs look awesome no complaints.

Do the Roku Ultras add compression to the streams?  Is there a setting I don't know about to fix this? 

[RokuEmmanuel-D · Accepted solution]

Thanks for joining us here in the Roku Community, @Diggy!

Having to deal with these issues can be pretty frustrating and we completely understand that. Let's get this sorted!

Picture quality issues can also be caused by a slow internet connection, and Roku Ultra needs a high-speed connection to establish high picture quality.

Here are a few things we can check...

• Have you tried connecting to a different internet to see if the issue persists? We can try a Mobile Hotspot and observe if it'll do the trick.
• How many devices are connected to your home network? If multiple, have you tried disconnecting some of them to see if the picture quality improves?
• Have you tried rebooting your Router? If not, we would recommend doing so. 
• Have there been any updates recently? If so, could you tell us the software version of your Roku Ultra? 

Let us know what you find out.

Thanks,
Emman