Comment by jdub
1 day ago
If guest memory can be reclaimed, it doesn't need to be paged to disk once you hit RAM contention. It's mostly saving accounting overhead, but it'll have some effect on latency, which you're more likely to perceive under contention.
But if it can be reclaimed it's not actually needed. So i'd find the minimum amount of configured ram a mac os VM can boot with more significant than the actual usage while booted but doing nothing.