There are 2 *possible* fixes for this bug currently. One is to use the JEMalloc_bi with the -malloc= startup parameter. (For x64 add _x64 on the end of the command: -malloc=JEMalloc_bi_64) The other would be to use the performance build that is constantly being worked on by Dwarden. There are multiple ways to get this, so I would suggest you look them up and find which is best for you.