Victor, just to bring your attention here - it seems that it’s not entirely your system that’s at fault.
DCS PG + F14 is just hugely demanding. My DCS went unresponsive on loading the F-14 in this test, and the “re-test”, but recovered.
I was hoping perhaps you could try something that may work:
In the ME, make a blank mission on the PG map. Add one F-14B as an air start and set the slot as “client”. Save the mission, then try flying it. Since the slot is a client, it will treat it like MP and give you a slot select screen. Stay as spectator and camera cycle around, then go to the menu and load into the Tomcat. Hopefully this would be a lower-load way to “preload” the map and plane into RAM / PageFile. Then try joining the MP mission on the server. Let me know if that helps at all.