Hi, I have a number of Roku devices. Recently I purchased an ultra because of the USB port. I want to show a few thousand pictures non stop. It used to have a repeat, but now I’m handing two issues. One, it seems to not play all the pictures on the usb drive. I have 4000 and it’s over in about 3 hours at 15 sec per photo. It should be a heck of a lot longer. Lastly, I’m getting flickering (system is 1080p). When I run Netflix and show something. It goes away. But it seems to randomly come back. Seems to flicker like a picture is loading. Weird.