Hello Fil531..

I used on this photo Something Called Xtream Booster v2 FSX Which is really good but i will not Recommend it for FSX steam Edition As steam Edition is all ready better at frames then the normal fsx.but if you have FSX before STeam Edition and you own a copy like me then i do Recommend you to get this Addon its really great Boost for FSX and you can Tweek with your CFG files easy for FSX,

These are the Following addons that was installed when this Screenshot has bean snaped :
( REX4 texture+Soft Cloud ) - ( FTX Global Base+Vector+Tree HD )
( FSGenesis - World Terrain Mesh ) - (Zinertek - HD Airport Graphics )
( FSPS - Xtreme FSX Booster v2 ) - ( PMDG747 )

Regard's
M.M

what mods are you using?