Is there a hotfix/patch that resolves memory usage/performance issues with X8

Hi,

We recently purchased Corel Draw X8 Suite for two of our users. They are both on Win 7 Pro 64bit, 16g mem, i7,i5. They claim compared to version X6 that memory usage is very high. Eventually their memory will get maxed out and I have no idea what to tell them or how to address it. Yes we could perhaps add more memory, but why wasn't this an issue in older versions? We did run the updater to make sure they have the most current update. is there a patch or fix we have to install manually?