Modern photoreal scenery (Ortho4XP style) is not practical for FS9 due to texture size limits. However, and night lighting add-ons can transform the sim. Check out BlueSky Scenery for massive, free photoreal coverage of the western US, designed specifically for FS9’s engine.
Unlocked, FS9 can reach 300+ frames per second. This causes: flight simulator 2004 windows 11