Grainy video quality

The past couple days, the video quality on my Ring wireless doorbell has been super pixelated/grainy and I can't seem to figure out how to fix it. It didn't start doing this until I decided to clear the cache for the Ring app because it was taking forever to load the live feed. I've literally tried everything Ring suggests, but I swear it's not my wifi! I have no idea what to do and I want my nice high quality video back, especially when it comes to the live feed!