Domain mapping Plugin Speed improvement

Hi guys my site has been running extremely slow lately so I have tested the plugins in hope to speed things up. It seems there are 2 plugins that stand out. One is an SEO plugin that I think I will dump, its unacceptably slow. The other is your domain mapping plugin, the slowest. I need to know if you plan to improve this plugins performance or I will have to change it out for a lighter option.

PS - your support ticket system does not show any plugins so I can't submit this in plugin support.