Dongle slow speed in one while fast in other laptop

[Alok]

About two weeks ago everything was fine. I have two laptops, and same 4g dongle giving 60Mbps in one laptop without any fluctuation while in second one its fluctuating a lot between 20 to 30 Mbps. Sometime ago it was fine but now its bad. Whats wrong I can't figure out.

what I did so far,

Malware Check : no threat
Any background process using net : nothing
reinstalled device


I have to use fast laptop as wifi hotspot now which is uncomfortable Any sugessions ?

 

[whitestar_999]

try turning any firewall/internet security software off temporarily to see if it makes any difference.also try downloading some big setup file from microsoft site using some download manager to get real idea about speeds.