For what it's worth, here is my tip to avoid OOM.

 

Run a registery checker (i use CC Cleaner) prior to running the Sim, then load your sim up, I fire up in this order:

 

1. AS2012

2. FSX (load from the desktop icon or start menu, not from AS2012)

3. TrackIR

 

When the sim is loaded select your aircraft, start airport and time/season then fly now. Let the sim load up and once done exit flight sim.

 

Then reload as below:

 

1. FSX (Load from the AS2012 button)

2. When the sim is loaded select your aircraft, start airport and time/season then fly now. (You may need to reload TrackIR as it likes to disconnect on the second load up)

3. Go fly

 

I used to experience OOM's all the time when I loaded up and flew. Now I'm not saying this is the fix but I will say that with reloading the sim a second time I don't get any OOM's. I use ORBX, AS2012, TrackIR with EZDOK, All FlyTampa, FSDT, WingCreation, PacSim, FlightBeam, 29Palms airports. PMDG, Carenado, Aerosoft, Milviz aircraft etc, Traffic 30% with 10% GA, LOD 5.5 and sliders almost all to the right.

 

Just give it a try and hopefully it works for you.

 

Interesting observation, perhaps others can confirm.  I use AS2012 on a second computer and notice when I initially startup the sims seems to hang forever on 6% then loads up.  If I get a crash and start up a second time it seems to load really quickly but I have not really observed what you are suggesting.

In addition to the OP, try this fix - http://support.microsoft.com/kb/947246.  I was reminded of this fix by B247NG.  This tweak increases the heap limitations.  FSX has a lot of programs running in the background (and so does Windows).  I had this one employed for some time but had to reinstall Windows 7 and FSX and I started seeing a lot of OOM's (or the FSUIPC OOM warning was dinging almost as soon as I started up FSX).  I had forgotten about the fix until B247NG recommended it.  Ran this fix and no more problems.  It should be a mandatory install for everyone who uses FSX.

 

Best regards,

Jim

I simply went to DX10 after reading a lot of positive posts about doing so here. Been a week with out any OOMs or CTDs. Before now I've never been able to finish a a PMDG flight longer than an hour or so.

I also use CCleaner, great little program

@LeeL Programs that clean up your system from leftover programs and clean your registry are great and eliminate a lot of problems.  I totally agree!

 

Best regards,

Jim

 

 

In addition to the OP, try this fix - http://support.microsoft.com/kb/947246.

 

Excellent tip!  Cheers.