I open minecraft in 1.9, the game starts to laggy. After 5 minutes crashes and shows me the error message "Unable to write core dumps" or something like that. I returned to 1.8.9 and not lag. This goes from 1.9 to date.
Excuse me for my poor English.
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Follow the steps at MC-32606 to fix your issue.
I have a similar problem, everytime I try to enter a server it says failed to write core dump and a fatal error has been detected by the Java Runtime Environment. I have tried different versions but I get the same problem.