Optimize process runs very long time

I have Optimization programs that run approx 9.800 iterations. Single stock, optimizing 2 variable. These used to run in about 40 seconds.

Today, the same optimization is taking almost 5 hours.

uses 16 threads. Dell Inspiron, i7-1360P 2.2 GHz, 16 Gb RAM, 64 bit OS

Any suggestions on what I did wrong?

More details are needed. Please follow this advice: How to ask a good question

And use divide and conquer method described here here: How do I debug my formula?
(try with basic barebone formula)