how to gurantee speedtest by wireless check

RouterOS Beginner Basics
1

Dear sir
I use

  1. RB951Ui-2Hnd use package 6.34.4
  2. RB951Ui-2nD use package 6.34.4
  3. RB951Ui-2nD use package 6.34.4
  4. My internet speed Download 100 Mb/s upload 10 Mb/s

method

  1. use bridge from RB951Ui-2Hnd
  2. use capman version cm2 for control item 2 and 3
  3. use Iphone 6 test speed 10 time by wireless connect
    my result
    1st 1 Mb
    2nd 0.5 Mb
    3rd 1 Mb
    4th 2 Mb
    5th 0.5 Mb
    etc
  4. use notebook test speed 10 time by lan connect result difference minimun 80 - 96 Mb/s

My question

  1. How to improve test speed from wireless

thank you & best regard