I don't think memory management is the issue. The file prints fine from V12, so it's either X3 or something about my new setup.

All my printers are connected via the network. I don't use HP printers. Currently I have Xante, Oki and epson for wide format.

I may try installing V12 on this machine and see if it has the same problem. That would tell me if it's something in X3 or a hardware issue.