I don't think that'd be necessary Moldova, I don't want to be wasting anyone's time. As I said it only happens for 10 to 20 mins a day, at the same time, and I'm getting a nice solid 6.x MB/sec the other 23 hours and 50 minutes a day so definitely can't be a fault. I'm just a curious soul and wondered if anyone had any experience or ideas.
Many thanks for taking time to reply.