Hello [name]! Thanks for joining the GMC. Before making any posts in the Tech Support forum, can we suggest you read the forum rules? These are simple guidelines that we ask you to follow so that you can get the best help possible for your issue.
It seems work fine for most people and most projects, including bigger ones. Most of the issues haven't been with the importing, rather with something simply not working after the fact. Have you tried posting in the beta forum? They would need the project to be able to reproduce the issue...but it would likely lead to a solution and be better for everybody.