Performance of unchanged code has slowed down tremendously from few seconds to several minutes. Nothing in the code has changed, so profiling to improve performance will not solve the problem. Task manager shows CPU usage capped at 25%. The 32-bit version runs faster than the 64-bit version of Matlab.
The change occurred after IT tried to fix a conflict between the 64-bit version and security SW that prevents Matlab from running. Are there settings within Windows or the registry that will cause this problem?