using Dlink dir 885 L now with time 1gb.

any possibly to get speed test close to 1gb said 800mb or 900mb?

Currently try it out on my note 9 and can only reach 500++, are there any setting that I miss it out?

the router connect to the modem using Cat6a ( 10gb max ) cable.
And the wifi router is 1.3g + 1.3g on 5ghz .

Anyone have any ideas?