Not sure oversampling would improve the ERS much. If it produces artifacts at native 96K, I would think it would do the same if oversampled.
Why not use SI-drums,Session Drummer 3 or Addictive Drums 2 ? They all come with Platinum.
From what I see ERS is a VST2.3 which is fairly ancient and does not use samples but instead synthesizes the sounds.
Is there a particular sound or kit piece in ERS that you cannot live without?
My advice is use AD2, it will sound unbelievably better.
What is the point of 96K/24 if you are using essentially a drum machine from the 80's or 90's?
There is much debate about 96K bitrate vs 44.1K or 48K. IMHO you will not get much from 96K. Be aware that 96K taxes your CPU 2x that of 48K and the audio files are 2x the size. Unless you have really good mics, pre's and a good room, forget 96K.
Record something at 96K and then 48K. Can you tell the difference ? If not stick with the lower bitrate.