Do you run Linux or Windows?
But I am going to try switching the game machines to Linux at some point. I can't tell you how many times I've run into what were almost showstopper problems with the whole iSCSI netboot thing with Windows, only to get really lucky with some registry hack that worked around it. I'm sure it's going to just stop working at some point. Whereas with Linux I can dig into the stack and make things work however I want.
In fact, in the old Palo Alto house, when I first completed it in 2011, the game stations were Linux for the first six months. In theory it was a better setup because the machines were able to use their local disks for the copy-on-write overlay (this was easy to set up with an initrd script and Device Mapper). With Windows, I haven't figured out how to utilize the local disk at all -- so all the copy-on-write overlays are on the server side, which of course wastes server resources.
Of course, the problem with Linux is game support. We got a long way with WINE in 2011 but there were just a few too many issues. Here in 2024, Linux is ostensibly a much more capable gaming platform, with Steam support, Proton, etc. So maybe it'll work better this time?
Anyway, just another project on the todo list...