I just bought my first Roku. I bought the Ultra 2020 model because it claimed to play video from the USB port. I have a 5TB USB3 drive, full of supported media files that play fine on a PC. However, when I connect the device to the Roku, it doesn't display any of the folders or files. Is there a maximum capacity supported? The product support page mentions file system compatibility and video compression/format/codec support. I don't see anything about a capacity limitation.