Ugh that ' s so mainstream , I had a dad bod way before it was cool . I ' m a visionary . <| sep |> Probably a combination of too much RAM allocated and poor startup parameters for that much RAM . Multicraft is probably telling you how much RAM is being allocated , not used . This builds up a lot of junk data that can take way more time to go through for the garbage collector than 8 GB allocation . There are startup parameters that smooth out garbage collection for applications that are time sensitive like Minecraft very few Java games out there , but you really shouldn ' t allocate 24 GB either . Find a tool that gives better memory usage information if you want to better familiarize yourself with your server ' s health .