Okey doh mate
I use ASN too and have a similar problem which seems more matched to time than anything else. I don't have Concorde so it can't be that!
I bought Aerosoft's GibraltarX a while back and if I've not got much to do.. I often do Culdrose-Gib (or t'other way round). If I do the run in something particularly quick (eg.. in excess of say 320kts in the cruise at FL300).. I can just about do the run without any issues. Sure.. the system is tired at the end but it's still running

If I do it in something slower.. say 300kts, the system has hung before reaching Gib.
I can't say that ASN is at fault.. I never wait long enough to find out as I use Task Manager to close down 'FSX - Not Responding'.. it may be the 'known' issue of FSX running out of steam

Others here suffer FSX hanging too. I'm sure Dale has had similar issues when using the TriStar but can't remember now if he uses ASN.
I did the run recently in the Nimrod with two AI Harriers in company. The weather was horrible off Cornwall so I popped outside to try and get a visual. External textures for all models wouldn't display and having got a reasonable visual.. I went back inside and the panel textures wouldn't load. They came back just before landing but then the Culdrose ground texture went

Having landed and taxied off.. I checked my memory use via Task Manager and I was bouncing perilously close to 4gig. I sat and waited.. looking at the Nimrod from tower view, and eventually.. all the textures loaded.
As real as it gets
ATB
DaveB
