Slow Processing Speed when Opening Images with ImageJ 1.53e

I am trying to open some rather large files in ImageJ (version 1.53e) to analyze. Once the images are open, I have no issue processing them, but to open one image, it takes between 5-10 minutes. My PI has tried on their system (ImageJ 1.52a) and while the images do take some time to open, it is noticeably quicker than with my setup. Curious if anyone has experienced comparable problems with the 1.53e version, or has any suggestions to speed the process up. Thanks!