IPOPT is slow

[Fahim13OSU]

operating system (macOS Big Sur Version 11.3.1 (20E241))
compilers (MATLAB with CASADI)
version number of Ipopt : 3.12.3, running with linear solver mumps
Hello,
I am using the above configurations to solve my problem with 1 state, 1 controle and 1 parameter but my it is very slow. I have been solving same types of problems using this same version but it was not that much slow at that time. The internal settings that I used are also given below. Please suggest me how can I reduce my computation time?
options.collocationPoints = 'radau';
options.polynomialDegree = 2;
options.nlpsolver = 'I';
options.controlIntervals = tf-ti;
options.initialGuess = w0;
options.objScale = 0.01;
ipoptoptions = struct;
ipoptoptions.tol = 1e-4;
ipoptoptions.acceptable_tol = 1e-2;
ipoptoptions.max_iter = 5000;
ipoptoptions.fixed_variable_treatment = 'relax_bounds';

thanks,