Media Encoder freezes when rendering multiple, or sometimes even just one, file.

I'm trying to change the codec of 300 or so files through Media Encoder. However, if I try to select about 10 files at a time and just change the codec (not even rendering yet) the software freezes and becomes unresponsive.

I can render only about 3 files at a time, one by one, before Encoder freezes, too.

I contacted a technical agent who had access to my computer, and he helped with getting Encoder to work at all, but the freezing is very much still there.

Just let me know what info you want about my hard/software in order for you to best help me.