every-time i play PA, the game lags during loading, and takes a quite some of time to ready itself. that is a bit annoying
You mean the time between that is shows you the solar system and before you get to choose your landing location? I have that too, but only on first load. Subsequent games (even after closing and reopening PA) are much faster. I think it's just pulling lots of data from the disk and the second time it's cached already. This is under Linux, mind you.