With you adding my RAM, that's exactly why I say 32GB of 4GB per core, to make sure everything runs while making sure not all hardware is being used so everything runs at max performance.
For example if an 8 core 32GB system is using 6 cores and 14GB, then all programs are running as they should be with ease. But if a 16GB system is using 14GB, there's not enough memory and might already be starting to pagefile.