Owncloud max filesize

I’ve successfully setup OC on my shared dreamhost account and have changed the maximum file size in the settings (as well as php-configuration). However, files over the size of 90mb (I think this is the limit) don’t get uploaded. They transfer fine but when the transfer is done nothing happens and the file doesn’t appear in the file list.

Is this because I need to increase PHP-memory? If so, what is the maximum file size I can accomplish on a shared server?