Hi, Just be sure that you increased the upload limit at least to 128mb. If you still have the issue, you need to contact your hosting provider about increasing the allocated memory size for your site.
I have a similar issue too. How can I check what is my upload limit? I had managed to upload a demo earlier, and then I had to reset WP, as I needed to change the demo. Although the first demo upload took 10 seconds, now it seems stuck.