You only need 16-32 bytes to fully seed a CSPRNG real good. It's true that some VM setups have had issues, yes, but that shouldn't generally be the case. But a

You only need 16-32 bytes to fully seed a CSPRNG real good. It's true that some VM setups have had issues, yes, but that shouldn't generally be the case. But a user mode generator isn't gonna do any better.