Jay Honeck writes:

Since you're flying heavy metal, I don't know why landing would be
difficult. One thing I've learned is that computer processing speed
(along with a top-notch vido card) are absolutely necessary to ensure
a fast enough screen frame rate. Although I presume any professional
3-axis simulator has up-to-the-minute computers installed, perhaps
not?

On a PC running a simulator, most of the horsepower goes to generating the
visuals. The actual flight simulation is well within an average PC's
capabilities. If you could dedicate one or more PCs to the display and
another one to they flight dynamics, you could get very good results.

As it is, it's true that high frame rates will improve the simulation. Beyond
30 fps or so, you can't see the difference unless things are moving very
rapidly across the screen, but you can sense the difference in the way the
simulated aircraft handles.

If this were the case, you would experience a slight, nearly
imperceptible lag behind your control input and reaction on the
screen(s). I've flown sims with this problem, and landing them is
damn near impossible without doing as little movement as possible --
just like you describe.

In worst case scenarios, such as 1-2 fps, nobody can land successfully in
anything other than dead calm and a 25-mile final.