Hi Guys,

My unifi (installed just last October 2018) has just got turboed to 800mbps recently. I only find that out when I login int0 my unifi portal. I did numerous TM speed tests and found that both of my download and upload speeds are just 100+mbps even using all wired Cat 7 Ethernet cable connection. My router is D-LINK DIR842 router supplied by TM. I contacted TM live chat to look into it. The following day, TM came over to my taman (not to my house) and did some servicing and unifi service was out for a few hours. I was informed about it as well as my unifi speed problem which they are trying to resolve by sms from TM. After unifi service has gone back up, I retested my unifi speeds. My download speed has improved from 100+mbps to between 350mbps to 480mbps using wired Ethernet connection while upload speed remains consistent around 200mbps. I have been testing my download speed for the whole past week, the max. Wired Ethernet download speed is around 480mbps while I should be getting somewhere 720mbps and above. My brother living in the apposite TAMAN can get TM speed test result consistently above 720mbps download speed. I contacted Live chat again, they reseted my unifi port to 800mbps again. But the max. Sustained Download speed still remains the same around 480mbps, only exceeding a thin hair over 500mbps once in a blue moon. I am a noob with regard to networking. Can any experts here offer some tips on what settings I should fiddle with to get it up to speed at least wired Ethernet speed of 720mbps and above ? During speed test, download speed will spike temporarily to 600+mbps and then drops speed and usually levelling to around between 350mbps to 480mbps.

Things I have done:
Use all Cat 7 cables- from BTU to router and from router to pc.
Disable QOS in windows 10 (as suggested by some online).
Shut down my router and BTU for about one hour after TM reset my port before powering them up.
Shutdown all my connected devices to router while doing speed test and turned off WiFi on pc.

Is my BTU or my D-LINK DIR842 router that bottlenecks my wired download speed? Is DIR842 router not capable enough of doing 800mbps wired Ethernet download speed ? Hope some experts here can give your input. My next course of action is to upgrade my router to higher end model D-LINK AC3150 DIR885L router and check whether my router is the culprit or my BTU inherent settings.

Thanks for your reply. I was testing on my rampage v edition 10 build with i7-6950x cpu overclocked to 4ghz with samsung 950pro nvme SSD drive. I think my system should be more than capable to handle that. I use Google chrome browser and also Microsoft edge browser to test and the same Speedtest.tm.com.my site as shown in your attached image. Running windows 10 1809. From google search, one chap recommeded turning off antivirus software as it lowered his speed test result. So I just temporarily disabled my mcafee internet security suite during testing and closed all background programs I am running. Only chrome or edge browser is running with one tap opened during Tm speed test.

Shortly replying to your post, I decided to use FireFox browser since you have used it in your attached image to check whether the culprit is due to browsers. Viola!! My download speed now consistently stays at 750mbps and above. Google Chrome browser and Microsoft Edge are limiting my download speed on my windows 10 1809 system!!. I have no idea why the popular google chrome browser with the latest version is limiting my download speed on my system. Same goes to Edge browser. Thanks Bro ! I can now proceed to upgrade my router to ac3150 model to enjoy higher WiFi download speed. Thanks for mentioning about the impact of browser.

The I7-6950x cpu is overclocked to 4ghz now (used to be overclocked to 4.3ghz) and the system is now retired as secondary workstation when AMD finally released the 32cores threadripper last august at a similar price to the 10-cores i7-6950x. CPU Temp is not an issue even when running heavy avx instruction code using in-house developed programs for days one end as the system is custom water-cooled with tonnes of radiator surface area, and it always stayed in an air-conditioned room with 24celcius ambient. The water loop is tored down and maintained every 6 months or so.

Well the speed download issue has now been solved and was traced to the browsers limiting my download speed below 500mbps. Thanks everyone for replying my post, especially Soonwai. A big thank you to you.

Hi Guys,

Just inquiring whether you guys are able to access Lowyat.net thru unifi connection. For unknown reason, I cannot access lowyat.net site and two other websites for the past two days showing connection time out error. All other websites are accessible by the way. The only way i can access lowyat.net is to disable tcp/ipv6 on my windows 10 pc or thru proxy servers or switching to streamxy connection (I have another streamxy line at home, to be upgraded soon). This only happen starting Saturday. Wonder you guys have the same problem.

Me too. I ‘m from Sabah. Now have to connect to my spare streamxy line.