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In reply too points raised by Buenchio (Thanks by the way). Perhaps it might help if a clarified what our layout is. I use a laptop in the same room as the router. When I use the laptop, which is about 500 mm away from the router, it is always on WiFi. The TV is in another room, about 14 mt away, it receives its signal via two power line adaptors, 1 at the router the other by the TV. I only watch TV and Amazon streamed videos via a TalkTalk set top Box. This morning I hardwired the laptop to the router for a speed test. Using the Ethernet cable the speed was: 37.09 & 9.31. At the TV end, I disconnect the TalkTalk box and hardwired the laptop to the power adaptor and did a speed check. Result: 37.42 & 9.32. Reconnecting everything, I tried the Amazon video. It was still buffering. Spent over an hour in contact with TalkTalk without a result. Amazon say its band width. TalkTalk........