This is usually due to bad network connection such as having your Wifi router or hot spot to far from the device that connects to our TV service. We highly recommend switching your device to a cabled (Ethernet) connection or moving your accesspoint closer to your device for higher quality and stability when watching channels.
If this unfortunately didn't solve your issue, it's likely your ISP is throttling HLS traffic. In order to fix this, you will require to setup a VPN connection on your device.
We usually recommend a VPN Provider such as ExpressVPN or NordVPN, they have very cheap prices and multi platform compatibility.
