Any optimization techniques that can make my houdini faster when it comes to High Poly Mesh and Animating Multiple Clusters of Character and Particles and Different Kinds of FX and dynamics.

my system is 12gb ram
i got an RTX3060 with 12gb vram
Amd 3500x CPU

I am looking for Optimization for Both the Engine and Scene. I am dealing with a lot of crashes when i go little deep into things or accidentally move the a slider beyond what my system can handle.