Currently using the DS918+ loader (was previously using the DS3615xs on my i3 baremetal) and so far it's a mixed bag. Windows 10 1809 installs fine, whereas Ubuntu and Xubuntu boot but won't install. I can see and format the disks without a problem, but as soon as I get to the disk selection step of the installer, the setup window goes into an infinite loading screen. It doesn't matter if I switch the disk mode from VirtIO to SATA or IDE the result is the same.
CentOS has it the worst, using the minimal installation ISO I get a kernel panic and there is no way around it that I was able to see.
The official compatibility list is quite out of date, I did try a certified build of CentOS but get the same problem. VMM might be putting some incompatible instruction in the Qemu VM config or maybe it's just really broken (which I find hard to believe). I'm lead to believe that this is the case as in my previous post I mentioned that enabling CPU compatibility mode with VMM Pro resolved the issue whilst on my DS3615xs loader (in which VMM was even more broken than it is on the loader I'm currently using )