OK,
with plugin version I mean the number in the lower right corner of the EZdrummer 2 interface.
How big is your Buffer Size in Cubase?
I am not that familiar with Cubase 9.5 but I know that CPU spikes can be avoided in general in some hosts by selecting an Audio Track instead of a VI track when running the timeline. It has got to do with something like extra buffering to be able to play the VI in real-time along with whats recorded.
BR,
John