It says I am running 2660ms behind. it also says the error was detected by the java runtime environment. Then it says failed to write core dump. Mini dumps are not allowed by default on client versions of windows. it says it happened in native mode. I have a better computer than my cousin and it never happens to him. I have tried reinstalling java, Minecraft, deleting profiles. One time I was able to get into the world but when I tried to break a block it crashed immediately. Please tell me if its something wrong on my side or yours.