steadyratio impact on pss

Hi,

Since I need to handle some pss convergence issue, i try to define steadyratio = 1.0 to converge the pss. 

But I can't figure out the concrete impact of such a parameter on pss simulation. I can imagine the pss accuracy is relaxed, but i want to evaluate if such relax is acceptable. 

I have read the chapter in "Spectre Circuit Simulator and Accelerated Parallel Simulator RF Analysis in ADE Explorer User Guide", but still not clear. 

BR