Unfortunately, you've told us nothing about your computer such as make and model, operating system used, or what you actually did to cause the problem you're seeing, so the answers will be brief. Basically, go back to a time when things worked like you want.
Of course, you could reset Chrome and Firefox which is easy to do and can be found on Google. But as far as correcting any network settings you may have changed, we'll need more information such as the type of connection you have, wired or wireless, and whether you use routers, etc. The more information you give us, the better informed our answer will be.
Hope this helps.
I ve always used Mozilla or Chrome but after i did smth to the network settings (or idk what i did really) all of my browsers have issues:
1.they dont load videos or gifs well
2.sometime when i click on a gif, it doest play (like it used to) but opens in a new tab and plays there.
3.Pages like 9gag, liquipedia etc etc lag very much to a point which the browser just crashes
PLS can you help me fix this without formatting, resetting my PC bcs i have a lot of work and programs with plugins (if i remove them it ll take a huge amount of time to reinstall)
THANKS IN ADVANCE!!!