@gameboy 

Have you tested with other devices to see if the 2.4G speed is the same with other devices or just the S10+?

@Tony yes I did. I tested with 2 other android phones & both had ~ 50-100mbps when placed 10 foot from the router. 

I guess I should ask if the ax6000 offers speeds within the 300mbps range on 2.4Ghz? 

@gameboy 

Real-world speeds differ with every environment. If you are getting 230 Mbps on a 2.4G connection that isn't too bad. If you want to see if you can get more speeds, stick with 40 MHz, and a channel that is not around you. Using a WiFi analyzer on your smartphone should help to see that. 

I would also disable the OFDMA if you haven't already. 

The following are also settings that were done where speed increase was seen:

-Set the application priority to standard (Advanced > QoS > Application Priority)
-Set the QoS speed manually to 1000 Mbps for up and down (Advanced > QoS, top of menu)
-Disable any device priority (Advanced > QoS > Device Priority)
-Disable HomeCare features (Advanced > Security > Antivirus)

@Tony Hi. Thanks for taking the time to reply. I followed all the suggestions & the 2.4ghz seems to be stuck at the 200-220 mbps range. 

So is this a router limitation? Is there a known case where a Tp-link AX600 would provide higher 2.4ghz speeds? 

@gameboy 

I heard of anything like that. What I would recommend is to reach out to our support team so they can examine what you are seeing in detail.