I am trying to make a modpack for my server. I have just about 100 mods installed. I have a pretty old CPU (AMD Phenom II X4 965). Can someone look through the list of mods I have and tell me which ones use the most CPU? I am trying to run the pack with 3.5gb of RAM if possible, but for now I just want to focus on CPU usage. When using the pack I jump between 50% and 80% CPU usage, causing lag spikes.