Hello. I'm using Roku Ultra and from time to time the video will blank out for about a second or two followed by another second or two of the loading wheel, then video resumes normally. This will happen on any screen such as the main menu screen or during video playback on Netflix or any other channel. This can go for 30 minutes without happening and then occur two or three times in a five minute span. Internet is 300 mbps and router is more than capable, plus Roku is connected to router via cable. Does anyone have any ideas or suggestions?