same here, my mobile (android) speedtest got 30mbps but PC (both laptops) only get speed around 18mbps (always less than 20mbps).

all the devices test at same area which close to router (DIR-850L) one by one.

my wireless connection not stable especially for 2.4Ghz, it will get "No Internet Access" suddenly without any symptom, then I have to restart the router to connect back.
However, wifi 5.0Ghz is working fine when 2.4Ghz having issue.
I have tried the setting eg. change channel width, change channel from auto to 6/11, disable HT20/40 (it will getting worst if disable HT20/40), the result same: internet not stable.

so now i disabled ipv6 and restart router, so far the connection seem stable (still need to monitor for few days) but my PC speed no improve.


any sifu can provide some suggestion?


thank you so much!