well ok, then i am happy for you
in any way i can assure you there is nothing what can surprise me in regard of size of scenes, "big size" is very relative;)
if you copy (ctrl dag in editor as this is often done in c4d) move cameras or instances etc for a while while ipr is on, i am sure also you would also get the crashes, at least if you use the same v9 or daily10 we all use. scenes are with cloners, scatter object, sky, hundreds of materials, cosmos parts etc
by the way, from customers perspective i think it doesn't help so much if you as corona support keep saying it doesnt crash for you.
we obviously would not report it and keep asking if the current v9 ipr crashing would not be real or dramatic.
you can also ask maxon, alone from me they got 100+ crash reports last days only, i assume from many others too.
if you work 10h and get 20+ crashes, regardless which pc you use, i would not call this normal (v8 was super stable),
i hope you understand why this makes unhappy. (i otherwise love corona render)