Hi! I find in my pack you'll gradually get less FPS till you re-log from a memory leak, I can go from 50 to 5 after a while. How would I find the cause of this?
You might want to check your server logs(On Debug Mode) and it sometimes tells you what might be leaking memory. Some common memory leaking mods that I am aware of are Minecraft Comes Alive(Severe), and Tinker's Construct(Mild)