Super slow wifi download speed. Help needed.

Ever since ive owned my 5x, downloading via wifi is slow, using Chrome, Talpatalk, Whats App, it downloads at abou 200kb
But if I download from the play store it goes to full speed of 1.3mb
If tried the following,
reset router
flashed latest radio from 19V
changed to 2.4ghz only in wifi settings.
turned bluetooth on.


Is there a setting that I might have missed?