i remember last time when i tested tplink ax10/ax20 the problem i noticed is that when loading 4k video in youtube it somehow cant autoselect 4k resolution always auto up to 2k/1440p only

im using wifi5 2x2 adapter on PC and even having the full link speed of 867mbps and speedtest no issue still have the problem...broadband speed was 100mbps...was running ap mode on top of openwrt router

because of that i vow to never use 2x2 router/access point again...must be at least 3x3 (AC1900/AC1750) which totally doesnt have the issue...even though 4k still not that mainstream not that big of an issue (just need to manually select 4k in youtube)

i wonder those with wifi6 adapter on PC do u experience the same thing?

LAN cable addict

I stopped buying commercial routers and opted to use old PC desktop with OpnSense installed. More powerful and future proof.

Don have problem using ax20, lan cable

I’m using a ASUS 2x2. My TV loads 4K on YT and Netflix by default. The problem isn’t 2x2 but how your layout and settings are optimised.

do not compare with tv and mobile cause the apps may work slightly differently than the website

It is common for Youtube website (and not only app) to serve lower resolution videos even when you use Ethernet cable and has high speed Internet. Just this night I watched this video in Firefox and Youtube played the 720p version with my 2.5G LAN-connected PC with TM Unifi fiber, even when I have Youtube Premium and the video has 1080p Enhanced bitrate version. You need something like this if you don't like this Youtube behavior.

no once i change to 3x3 or 4x4 access point the problem is gone...technically speaking there is increase of radio sensitivity by the change but even with 2x2 i achieved full link speed but somehow something is preventing from auto selection of 4k

No, I will still say that it is Youtube problem. Surely a 2.5Gbps LAN connection over 800Mbps Unifi beats any 3 or 4 spatial streams Wifi access point at all times. But if you have proof that Wifi AP with 3 spatial streams can beat a 2.5Gb LAN connection in LAN capacity and also latency then I am all ears.

intermittent problem is different than never being able to achieve...a 2x2 setup might never achieve the throughput rate (without buffering) required for 4k by youtube web

I have no issue to watch 4k with wifi 5, or more accurately it is AC1200. ISP is 300m.

App problem. If you use revanced, then you can set default resolution.

issue is not to watch is whether it will autoselect 4k resolution in 4k video (usability problem that affect all ur network user)

i know that same with twitch if use custom app only can set mandatory resolution

YouTube website always has problems, it will almost always serve lower resolution videos regardless of whether you use LAN connection or dual spatial stream Wifi. Have to use custom apps for mobile users or browser extensions for PC users.

Oh ok. But i believe it is glitch of web youtube or browser. Doesn't make sense because of wifi.

i totally do not have any issue with youtube other than known problems like some freshly uploaded videos have low res and some videos have problem loading cause not conform with encoding specification...better u doubt urself and ur equipment than doubt youtube

When YouTube serve me a 720p video when a 1080p version is available, whose fault is that?

A. My 2.5G LAN connection plus Unifi 800Mbps?
B. The YouTube website itself?

B

try direct pppoe from computer to btu