Now testing on a long haul flight over IVAO network.
I'm writing while cruising.
Started cold and dark, setup the a/c as per manual normal operations. All CDU ops went fine, all SIDs and STARs were there, planned the route manually with no probs at all. The radios work ok.
Performed a derated t/o (using UTOPIA values) and a smooth climb to planned flight level F380. Also made a step climb to F400. Fuel flows correctly (center first) and the consumption prediction is ok.

What I have noticed:
the gear lever doesn't go to stop position... I put it there but she comes back to up position;
the ceiling for the 752 should be F410, but the CDU is planning a step to F420.

Obviously, just minor issues. I think I finally will have a lot of fun with this lady.

Nice work, Captain Sim!  ;)

Edit: managed to set the gear lever to stop!!!  :)