I'v looked around for a while trying to figure out what is going on, however it seems noone or very few people are having the same issue.

System Specs:
i7-3770k 4.6GHz
16GB DDR3 1600MHz
2x GTX 670 in SLI
850Watt hybrid Modular PSU
120GB SSD, 3x 1TB + 1x 320GB

Had loads of issues with FSX regarding FPS, it struggled to get higher than 20 and often found itself in single figures. I'v done alot of tweaking and it runs around 30FPS most of the time but no higher (Unusual for a system like this!!)

But i'v noticed an issue with DX9 mode. I'v screenshotted a multitude of aircraft with the same sort of issue:

Default Barron missing engine cones


Carenado Cessna 182T HD Missing wheels, gaps in vents etc


Airbus X - Lights off - No issues

Press 'L' to turn on the lights and tail fin disappears, cockpit goes see through as does all the passenger windows


PMDG NGX (worst effected) Missing gear struts, Wheel hubs on inner wheel, engine exhaust assembly, front engine fan etc...






All these issues are solved with using DX10 preview mode, but FPS are lower using that, so i'd rather get this sorted really! it is not aircaft texture issues as it happens with them all!

Any help appreciated!

it is to be noted, turning the aircraft detail to 'minimal' in FSX settings cures the problems on the Barron and Carenado Cessna, not the Airbus and NGX though.

Try including

 

HIGHMEMFIX=1

 

in the fsx.cfg [GRAPHICS] section. Then report back your findings