diff --git a/software/calculateMovieDisplacementField.m b/software/calculateMovieDisplacementField.m
index 6283c1e..928639a 100644
--- a/software/calculateMovieDisplacementField.m
+++ b/software/calculateMovieDisplacementField.m
@@ -212,7 +212,7 @@ function calculateMovieDisplacementField(movieData,varargin)
             % Adaptation of psfSigma from bead channel image data
             poolobj = gcp('nocreate'); % If no pool, do not create new one.
             if isempty(poolobj)
-                poolsize = feature('numCores');
+                poolsize = str2double(getenv('NUMBER_OF_PROCESSORS')) - 1;          % Modified by Waddah Moghram on 12/10/2018 and is better to get all cores when hyperthreading is enabled
             else
                 poolsize = poolobj.NumWorkers;
             end
@@ -527,4 +527,4 @@ function calculateMovieDisplacementField(movieData,varargin)
 % Close waitbar
 if ishandle(wtBar), close(wtBar); end
 
-disp('Finished calculating displacement field!')
\ No newline at end of file
+disp('Finished calculating displacement field!')