Working perfectly on my old system! Not a single problem so far in Career mode ( both new patrol and saved patrol )
Only 2 small issues but I can live with them

Weird doppler effect to engine sounds when moving around in free cam.
When a save is loaded, engine animations wont start until a new speed is ordered.
Win Vista Basic.
3GB RAM
2.0 GHZ Dual Core.
Nvidia GeForce with 1.5GB vid Mem.
Mods in Use (in order):
GWX - 16km Atmosphere.
GWX - Lite Harbor Traffic.
GWX - No Medals on Crew.
GWX - Captain America's Officer Icons.
SH5 Water for GWX 3.0 v1.6.
Water Streams + Exhaust Combi v2.3.
FM_NewInterior_V1.0