Board Thread:Modded Server Technical Support/@comment-29170391-20160811021706/@comment-27219153-20160811042515

To allocate more RAM for you client, open the minecraft launcher. Click edit profile on the lower left. A window will open and at the bottom it will have JVM Arguments, put -Xmx2G in there, then save your profile. Click play to launch and see if your problem persists.