I only have an 8 core iMac Pro worth 6k and to be frank, it crashes sometimes, it sometimes shows the beach ball and overall it's ok but I would have thought I'

I only have an 8 core iMac Pro worth 6k and to be frank, it crashes sometimes, it sometimes shows the beach ball and overall it's ok but I would have thought I'd get more for the price (compared to the MacBooks etc. I had over the last 15 years).