Yes yes yes yes yes. Even when just gaming on 8GB I hit my limit in a few memory-intensive titles, so much so that I legitimately can't have ANYTHING other than Steam, basic OS tasks and Afterburner open while in game or it'll start stuttering. Even Discord has to be closed.
My system uses 8GB ram and 10GB commit charge while playing GTA online (No pagefile because slow HD and 32GB ram) For me going from 12GB To 16GB was allready a difference and even from 16 to 32 i noticed difference.