You use addon for night lights? Taburet or Aerosoft night environment for example.
In this day i have same issue when approaching at LICC by RFScenery. 2 flights...to crash at same point.
Few minutes ago, i test area over scenery LICC, after 15/20minutes, sim drop down to 5fps and crash.
In area use: FTX Global Terrain, OpenLC, LICC RFS and Taburet lights europe base.
During test, and on 2 crash flights, monitor VAS and no >1500/1600, good, and gpu don't over 40/45%.
I don't have any idea for this crash... My p3d 3.2 is fresh install, no tweaks in cfg...no shader mod, no enb...