Yeah speed is the only reason why i won't give Gitlab another try. All these features are great. But i don't believe they will help them with market share until they have addressed the speed issue.
After August was filled with performance related problems on gitlab.com, they actually managed to fix a quite a lot of inefficiencies and more to come.
Plus you can make it as fast as you want if self-hosing is an option by throwing more hardware at it.
