W2gSync video not synced with other people

so, I am watching video’s with my friend using W2gSync and even tho the time bar shows the same time mark for my friend it is 10 seconds behind on where I am

Which video are you trying to watch? Please send link as PM. Thanks!

the Overlord series on 9anime, it does work normal with series like grisaia but with overlord it for some reason let’s my friend lag 10 seconds behind even tho it show the same time mark