The CS is more comfortable than my ex 2018 M3 Comp. Firmer but more comfy. Tire noise seems also quieter. Maybe tires sizes and tires pressures play a role (CS = 245/35/19 - 265/35/19 VS M3 = 265/30/20 - 285/30/20 with lower tires pressures).
I was too surprised after testing the 718 GT4. The car was so well damped! Comfy and so incisive
They really improve both comfort and sportiness with those new generation of dampers.