Are you sure that removing thrusters would help? I'm almost sure that not. If the game has to calcuate each shot, thruster on/off doesn't influence connection and server speed even in most minor way.
Evolution values won't work for Discovery. Many reasons here, I'm not intended to get deeper into this. Again, I spent countless hours trying to find a solution. But I never found one. Tried ship maneuverability values from many mods.
What I'm absolutely sure is that mass doesn't influence spinning in any way. Feels that it even gets worse if you raise the mass, but I have no proof. Mostly it's all the same.
