Chosen Solution
I’m on Instagram and Facebook and YouTube as well and my videos keep pausing. I restarted the phone and force stopped the apps and it’s still doing this.
Download speedtest.net app and see what the speed of your connection is. Normally Video over a Data plan can see interruptions. In some “unlimited” dataplans, the video is restricted to low quality, so you have to set your app to show low quality videos accordingly. Over WiFi do the videos still have pauses?