if i not mistaken Tp link MR6400 not support 4g+....so u only getting 4g ........by the way u can do a simple test....switch the sim between your phone and router and do speedtest...if the router sim slower and phone sim faster that mean is your router problem.

i think the best spec 4g router for Tp Link is MR600 but cost almost double of MR6400. in this price range will choose the Huawei B618 unlocked version

mine is fibre + 98 postpaid...my postpaid plan still capped for youtube 8pm-12am eventhough i never exceed 300gb fup.....coz at home i still can connect to fibre, but my shareline rm48 plan which use at my hometown by my parent suffer from this throttling, they mostly stream youtube for those oldies song and i really wonder why maxis can come out with such throttling seriously 480p oso will experience lagging man. i was not happy with it and try to complain to maxis customer service several time but they only create case-id, told me that it was unexpected technical down or network congestion during the MCO period. i cannot accept this excuse because maxis actually come out with hotlink unlimited plan which if they know their network congested should never introduce some plan like anymore.

i try google search for any news or facebook post that maxis user actually got make noise on Maxis or not but seems like other user can tolerate with Maxis suck throttling policy....haiz....doubtful on how they able to get the no 1 ISP in Malaysia

i logged mine report to MCMC as well, hopefully more and more ppl do the same , Maxis is definitely too over for such throttling move

Today i can stream YouTube 720p max...1080p still buffering....at least 720p is acceptable clear resolution....not sure is this relevant to my mcmc complaint coz before even 480p oso keep buffering for youtube 8pm onwards