When watching the sports channels with boost activated the picture has a blotchy / blocky effect. The stream is certainly 1080p and 50fps watching through my now tv stick. The same issue isn't present watching BT Sport through youview or other channels. Its very noticeable on green grass when the camera is panning around and even more so on darker backgrounds. This isn't something I've noticed on the Sky Cinema channels.
Anyone have an idea on the cause or a possible cure? I have a picture of the problem but can't see how to upload it.