I am a CG special effects division, why AMD rayzen 1800X in RealFlow and naiad settlement particularly slow, and even slower than AMD II 1055T 4 to 5 times, what is the reason, how to solve?

  I am a CG special effects division, why AMD 1800X in RealFlow and naiad settlement particularly slow, and even slower than AMD II 1055T 4 to 5 times, what is the reason, how to solve?