ac5300 merlin 384.5

I have an Asus AC5300 and it has worked great for years. Today I updated Merlin firmware to version 386.3.2 Immediately after update was complete I checked and my internet speed has slowed to about 300 Mbps. I was getting 930 Mbps before the update. I've checked QOS is all disabled, and can't...

Hi; I've recently purchased a AC5300 and installed the Merlin 384.5 firmware. I had set this up with one main SSID with Smart Connect for the 2.4GHz and both the 5GHz radios, and two guest SSID (one for the 2.4GHz band and one for the 5GHz radio 1) Funny thing is that after a reboot it...