Took me awhile to find out. I've been getting my feet wet with the FBW A320 on short hops here and there, cruise alt of around 32,000 ft, and the ATC did its job on IFR approaches..
However, lately, I upped my game so to speak, and did a much longer flight from Vegas to Atlanta, with a cruise alt of 37,000 ft.
Here's where I noticed issues: ATC had me descend much later than my TOD (Top of Descent). Then ATC talked me down slowly, to the point where I was still at 15,000 ft and THERE WAS THE RUNWAY!!!!!!
Much too high to capture the glideslope, AND the Approach!!
Had to declare missed and try again, and from there, the MFDU flightplan was all messed up. I couldn't reprogram the FMC. I aborted the long flight and had to go to "travel to Final" and cheat that way.
This is a known issue as I've read from other forums. So my alternatives are, request the various descent altitudes myself, ignore the sim's ATC, or fly with online ATC.
Ok, rant over, now my question: Any word on a fix for this?
By the way, I always choose "low altitude airways" in the sim's plan, as was suggested to me by a good friend who's a diehard simmer himself...