I have nextcloudAIO running on a VM with 6 vcpu, 16gb ram. No issues with performance.
The root partition is on an nvme drive, the data partition is on a HDD raid 1 array.
That VM is hosting another few services like nginx proxy manager, Heimdall, and a few other things I forget at the moment.
Never have any issues with performance
They are, until it happens to effect them directly.
“He was supposed to get rid of all the slackers and cut off people abusing the system, not fire my entire department!”
“He was supposed to put in tariffs to make China pay more, not to make the price of our goods go up!”
Classic leopards eating peoples faces party behaviour.