Topology optimisation responses and constraints

Hi!

I wish to perform topology optimisation. Here i have applied basic boundary conditions: Fixed constraints (SPC) and Loads. For response variable, i have selected compliance and volume fraction. I have applied a upper bound constraint of 0.4 on my volume fraction. And my objective function is compliance response here.

The outputs i get are not that accurate. What more does altair has to offer that i can add in on here to refine my outputs more. I wish to use the SIMP method here so how can i produce SIMP results here.