unstable speeds
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Hi all I have a Deco M4 3 units on 350mbps from my ISP .I set up the system from the isp modem and all was working fine till last night. Unfortunately I had a fault which emulated the same fault I have experienced on 2 other systems , I lost my Internet connection .I naturally reset my modem but the wifi didn't restart in fact the 2 wireless units spent all night alternating from a red light solid , and flashing and a solid white light. When I got up I restarted the modem and also the mesh , regained wired connections but still no wireless..I decided to start from scratch deleted the network and reset the units . However I could not connecthe main unit to main unit as before so I assigned a diff unit to be the main . The next unit connected easily but when I tried to connect the old main unit it would not until it was touching the main router. I am still getting probs from this unit and I am suspecting it could be faulty , my daughter checked he speed from her room and was in excess of 100mbps , in my room 2 mbps...I moved to her room and my speeds went up back to mine and it went down..this happened at approx the same time as last night ...could I be right in suspecting a faulty unit ..any ideas please
@TP-Link Hi I have continued to monitor this afternoon and this evening...i have just tested my deco and got virtually no speed this was on my dedicated guest network of 2.4 ...i tried it on the other deco and got about 60 + I then switch to the mesh combined network and still got a low speed, tested again within seconds and got nearly 150...i have also noted that whilst both decos are connected to the main hub the one that may be faulty only connects at 2.4 whilst the other connects at 2.4 /5 ghz...not being a networking expert I cannot say if this is correct but I am learning fast...I hope this additional info helps I have attached screen shots 
@ukmartian as requested a picture of the bottom label I have also added a picture off the connected client on this unit, as you can see there is none..there is actually 3 online devices on the 5ghz band about 2 metres from the unit but they are actually connecting to the main Also I have purchased a TP link 300 ethernet to USB adapter and plugged it into a tablet via a adapter cable it worked when I tested at the main yesterday and the tablet recognised it but I could get no internet through it today..once again thanks for your help..
