Im sick of my sim and DX10

Long story short every time i select DX10 preview on my FSX, after restart the sim opens the welcome screen and at Fly Now button restart the sim, no matter what i do..  Never Happen before..

The full story is:

I saw this video in YT did all steps and my sim restarts not even try to load..

I erased the FSX.CFG file but same result (Restarting)

I downloaded the DX10 file (even DXDIAG said i have DX12), still no success

I dont know what else i can do..

An other weird thing is that i erased the trafficAircraft.bgl file from scenery world scenery and default traffic still appears, i have to remove the planes default folder to remove the traffic.. 

I really hope you can help me my sim looks 7 out of 10 with DX9 specially cuz of the water textures..

My system is: 

Alienware X51
CPU: i7 3770

RAM: 8GB DDR3

GPU: GTX 660

OS: Windows 10

I have:
FSX + SP1 + ACCELERATION

REX OD + ESSENTIAL 

REX DIRECT

ACTIVE SKY 2016

FSC 9.6

HAWKER 850 AND 800XP

SKAI TRAFFIC V2