Ring app freezing lagging during playback

Every time I log in to the app on my phone and try to play back recorded videos I can only play two or three then it starts freezing and jumping all around, becomes unresponsive and I have to close out and reopen the app just to watch the next recordings. It’s more than annoying and unreliable at this point. I have them set to take snapshots and record motion. I have one doorbell and two plug in stick up cameras. The stickup cameras are on a separate internet connection but both routers and the internet service have over 150mbps so it’s not the internet and it’s not the connection.