Minecraft Life in new woods brings CPU to 100%?

I play the Minecraft Modpack Life in new wood version 1.16.4, but while playing the game hangs up every few seconds and the CPU increases to 100%. If the CPU then sinks again, it briefly continues normally until the next lay. What can I do against it? Can someone help me there?

What kind of CPU do you have? Maybe it's just too weak.
Maybe allocate more ram, I think it should be at least 6GB

I have the "Intel (R) Core (TM) i5-2500K CPU @ 3.30GHz" CPU. I don't know my exact RAM allocation because I kept the default setting. The Xmx is at 4096m, but there are other things behind it such as B. Xms256m XX: PermSize = 256m. Unfortunately, I don't know exactly what that means.

A 2500k comes to 100% utilization at Mc, had it himself 2. You can see how much Ram Mc has been assigned when you press F3 ingame in the top right corner.

At the top right it says: "Java: 1.8.0_51 64Bit

Mem: 80% 2926 / 3641MB

Allocated: 100% 3641MB

I increased the RAM to 6GB as you recommended and it actually helped. I didn't do it right away because I was obsessed with it being too high a CPU load, no idea why.

Put Xmx = 6000m, that should help with the lagsoikes. The CPU is still fully sufficient for Minecraft. It is not unusual for the CPU to go to 100%. Just the lag spikes. Otherwise try to push optifine into the mods folder and see if it works. Optifine can't handle some mods, but it usually works

I did it, it worked