I’m not a pro, but I can tell you this:

1. Unlike other page builders, VC required me to bump my PHP memory settings up by 100%, from 128MB to 256MB. Never had to do this for Beaver Builder.
2. In VC’s system status dashboard, my site is never connecting to VC’s AWS, account, or large data transfer. My ISP has audited the connection and there is no blockage on their end. Hmm.
3. Sluggish.
4. Default responsive setup is awful – my site content is using 15% of the screen width, with huge margins on either side. I don’t want to have to hand-tune every page element to make it readable.
5. Right now I can’t even edit my pages. Gutenberg loads fine, but VC just sits there and spins the loading indicator. I’m done with it.