When I load the nether my game crashes

So, on me and my friends Java Minecraft Server, we use the nether a lot, and I recently started getting crash reports saying: "#

1. A fatal error has been detected by the Java Runtime Environment:
   #
2. EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00007ffdb55988a1, pid=7144, tid=8592
   #
3. JRE version: Java(TM) SE Runtime Environment (8.0_51-b16) (build 1.8.0_51-b16)
4. Java VM: Java HotSpot(TM) 64-Bit Server VM (25.51-b03 mixed mode windows-amd64 compressed oops)
5. Problematic frame:
6. C [atio6axx.dll+0xb488a1]
   #
7. Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
   #
8. If you would like to submit a bug report, please visit:
9. http://bugreport.java.com/bugreport/crash.jsp
10. The crash happened outside the Java Virtual Machine in native code.
11. See problematic frame for where to report the bug."

I honestly don't know what to do.