I would uninstall and reinstall. X9 blows X5 and X7 aways with its speed and paths and new tools. the new look that started from X8 really a nice improvement. We are at 2017 now. but the X9 based on your computer should run great based on the specks I have laptop I run it on with a little less then that and have done a lot training with them no issues. start time is fast. Al my computer use SSD drives that helps and all have min of 12 gigs of ram and the quedrom M200 or higher.
Did you get this going yet. now to reg with the Mastercam site try doing from the computer that has the dongle on it so it can check it.