Hi Timo
For upgrades to Ozone 10 , look for the deals
I am in the UK and i got a great upgrade price from Sweetwater in the USA $49 for Neutron 4.
Some sites are ridiculous prices so you have to get streetwise with Izotope.
Their prices are up and down like a Yo yo. I am after the Ozone 10 Advanced as i have the similar with Ozone 9.
To get over my random Ozone 9 crashes i just save when it comes to comparing my track with the Reference. Sometimes it is ok and sometimes not , but i still get to finish by constant saving.
Izotope just say do this and that and even try safe mode and that’s it
They must know something as the Cubase 12 dump files say it is an Ozone 9 problem and i gave them several . Well , here’s to 10 then.
All the best
John