youtube video wont buffer after 1 minute

i try to watch a youtube video and it works fine until the 1 minute mark from that it wont load the rest of the videos, tried incognito and google and it worked but not firefox

its been 2 days since this happened to me

tell me if this is a firefox issue (and how fix it) or youtube issue

update: i fixed it by turning on (proxy DNS when using SOCKS v4) in the network settings