Why does Deconvblind freeze?

I am trying to run a simple program using the deconvblind command. I have an input blurry image named 'TOFA-003_UV_Cured_Lincoln_Corrected.bmp'. When I run the script below, my computer freezes and I need to reboot my computer. I am a beginner with MATLAB and would appreciate help with using the "deconvblind" function so that the program does not freeze.

I = imread('TOFA-003_UV_Cured_Lincoln_Corrected.bmp');
PSF = fspecial('gaussian',13,45);
INITPSF = ones(size(PSF));
[J P] = deconvblind(I,INITPSF,30);
imshow(J)