xX_The_Problem_Man_Xx
Perhaps your PC can't handle those mods together, you wouldn't believe how much laggier modded gameplay can be. That, or those mods are not compatible with eachother, or you're using the wrong mod versions.
If you want to start up Cosmoteer to deactivate those mods, open cosmoteer in the No Mods mode. (Or just delete them from your Mods map)