Whilst I agree 20 Mbps is poor, that's the rule VM apply.
Your mission, should you choose to accept it, is to research what impedes wifi signals, and then move the obstacles such that the speed improves. Or perhaps through some creativity unimproves sufficient to be below the trigger value. If you or any member of your household are caught holding sheets of tinfoil near your phone, Andrew-G will disavow any knowledge of your actions. This post will self destruct in five seconds...fzzzt. See, it's gone now.