Which sim are you talking about?

The one which is included with the PTS?

Don't even bother installing it. It really IS that bad.

Get yourself a decent sim.

G3, Reflex, AFDP (and maybe FS One, although I have yet to test it... FS One comes with a native PTS P-51 model!) will all help you learn.

While it may initially seem like a lot to spend, the sims will pay for themselves over and over again.

Thanks to the sims I soloed on my first day at this and brought my plane home intact from the field, instead of a bunch of bits of balsa.