This has worked for others…
From a russian site…
With the original W10 from Teclast, i have lot of of wifi speed issue and the disconnect, and i the find on the the intel That a trick the forum forum solved up my speed step trouble.
with In the registry the change the HKEY_LOCAL_MACHINE \ the SYSTEM \ CurrentControlSet \ Contro l \ the Class \ {4D36E972-E325-11CE-BFC1-08002BE10318} \ 0001 \ bLeisurePs from 2 to 0 and disable / enable wifi card or reboot to see black magic.