First, I like all the work that has been put into this mod, with new techs, units, promotions, resources etc. Brings a new fresh gameplay feeling. Good job to you and your team.
The time it takes to get through researching techs, building units, constructing buildings, and even building improvements is just way too long. I run into time victories before the research tree is completed. The AI even struggles, albeit ever so slightly, on the higher levels to research quickly.