hello everyone im a new member here so im sorry if im not putting this in the right format or something

i have an issue where everytime my tab's wifi is turned on that it sucks my internet speed tremendously..
my latency was 9-12ms on my pc until i turned on my tab's wifi.. it escalated so fast that it turned to 2k-3k ms in a matter of 2 seconds
i checked this and that in the tab looking for any sort of auto update but i fail to.. plus if there is an update on something it wont really sucks my internet that much assuming when i download a game it only take me to 200ms-300ms..
so does anyone knows whats wrong? if anyone can help it will be a huge help for me and probably others with same question.. thank you very muvh in advance