I'm having some issue with my turbo-ed 800mb. I had gotten myself an Asus AC1900/RT AC68U router and also had change my lan cable to cat6. Despite how also i am only getting 2xx-3xx MB speed only.Anyone can give some advice on it ? Thanks

NAT acceleration relationship with QOS, Traffic analyzer, URL filter, keyword filter should be common knowledge by now. I mean...one of us repeat it at least once every day.......

Thanks for this. What shd I rename it to? Maybe I shd do a search 1st for information on this.

I had a fun time trying to troubleshoot the low speeds with the Alienware 15 R1.

Followed John's notes and renamed mcupdate and reboot. Speeds in speedtest app was similar ~ 660 -720Mbps. Speeds in Edge browser, higher ~ 740-750Mbps. Chrome browser was similar to speedtest app. This was even with McAfee virus scan and firewalls turned off and the browser extensions all turned off. On the Asus router,AI Protection was also off (QoS as well). So nothing I did allowed me to get the speeds up to 800Mbps on the Alienware.

Moved to testing with the Macbook Air 13 (2014) using thuderbolt to gigabit adapter. This was a laptop that was on Windows 7 (Bootcamp). Similar speeds seen. Moved to booting with MacOS and tested with app on Mac OS X --- boom 820Mbps, 210Mbps UL.

So definitely something about windows config in my setups that is limiting. Will spend some time in the weekend figuring this out.

BTW, did check my microcode and since its a Haswell chip, it did indeed show x024. Oddly, Dell did carry out a BIOS update in February that shd hv fixed the Spectre thingy at least from the BIOS portion but looks like the Windows update has not caught up.

Anyway, long story short, TM did actually get the speeds right, while I don't really see the benefits as typical speedtests to US or European servers seem muted to 230 -300Mbps anyway, I'm not sure how much the 800Mbps is actually helping.

BTW, my bill is still RM299...so probably another visit to TM Point or chats likely in a few months..

i am using RT-AC68U, latest firmware

when i NAT Acceleration CTF (Cut Through Forwarding) is enabled i can get max speed 500Mbps for my UniFi 500Mbps package

when i disabled it, i only can get 300Mbps

the problem is when i enabled, after few days, my speed test might drop and drop until 20-30Mbps... if disabled, i can consistently getting 300Mbps forever when running speed test (somehow unable to achieve 500Mbps)

any sifues here can helps? if i leave it disabled, my speed test only close to 300Mbps unable to reach 500Mbps
if i leave if enabled, day by day the router speed seems dropping and have to restart

which Asus router you using?  i checked all QoS, AiProtection, apps anlysis all off because i didnt use all the while also, i google search, notice a lot comment from this NAT acceleration, i have no choice to getting 500Mbps have to leave it on... perhaps it is Asus router older model issue? is geeting newer model can resolve this? 

i actually notice this problem when getting 100Mbps last year
enabled NAT acceleration, after some time my 100Mbps drop til 20Mbps... need reboot router
after disabled, i can forever hitting 100Mbps from speed test

mine same latest firmware version with yours
i have another laptop i tried speed test with gigabit LAN also same

something wrong with the NAT acceleration feature built into this router, i remember someone recommend me disabled it when i am on 100Mbps when having such issue, the speed drop over days... after disabled no more speed drop over days.. now i have to enabled with it

yours, if disabled, will not hit 800Mbps right? what is the speed if disabled NAT acceleration?

thanks.