cmd problem

my friend told me doing something with cmd will help my lag so I did what he told me, and as he said, it makes me lag when watching video.

so he told me to put "netsh interface ipv4 set subinterface "Wireless Network Connection" mtu = 152 store = persistent" on cmd, and it seemed like it made me faster but not so sure.

he told me i will need to change 152 to 1500, and it will get me back to usual.

I tried doing it but it says it require elevation and still making me lag when i watch video, can anyone help?

Isn't that basically the same as MTUOptimiser?
low MTU makes you lag less for such things as online games, but lags your browsing on the web.
If you're an administrator on the computer, type cmd in the search bar and then SHIFT+Right-click CMD and "Run as Administrator". Then type what ever you did except with 1500 instead of 152.

my bad, man. i forgot to run it as administrator lmaoo

^ +1 lol. Btw, if you go to mabiwiki and type lag into search bar... there is alot of other things you can do O: (meaning like 2..)