Comparisons of the performance of the Singlepoly, Multipoly, and Nopoly algorithms across different levels of magnification in a three-lens system. The points reflect the averaged computational performance across various source positions within the same magnification bin. Four different lens configurations were selected, characterized by the parameters (q₂,q₃,s₂,s₃,θ,ρ). Here q₂ and q₃ represent the mass ratios relative to the highest mass, s₂ and s₃ denote the distances of these masses from the highest mass, θ is the angle between the lines connecting the two lower masses to the highest mass, and ρ is the source radius.The configurations are A [1,1,1.7,1.7, π, 10⁻³], B [1,1,1.5,1.5, π/3,10⁻³],C [1, 1,1.2,1.2,0.7π, 10⁻³], D [3.3 * 10⁻⁶, 10⁻³, 1,2,0.7π, 10⁻³ļ. The images in the top left of each graph show the caustics and critical curves for each lens configuration. The computational performance of the three algorithms in a three-lens configuration remains consistent across different lens configurations. The order of efficiency, with Singlepoly being the fastest and Nopoly the slowest, is maintained regardless of the specific lens parameters.