My router WNDR 4300V1 resently reduced the speed from 60 Mbps to 30 Mbps. Ok when using cable.

Your reply was rater strange. When i point out that the download speed when using a cable connecting my router to my computer my download speed is ok 60 Mbps it should imply that when i use WIFI my speed is 30Mbps or half the speed my internet provider is allowing me. That fact must have some implications. The router i am using as i pointed out is a Netgear WNDR 4300V1 Router. What has changed? You sugest to test the perfomence by using a nother cable, what are you talking about? What are the results of a factory reset? To end my reply i am not impressed.