Sounds like you are talking about playing games and the lag referred to is the extended load times and freezes during play.
If you buy an 8GB card then follow this guide and I have been reliably informed that it will work like greased lightning.
Mainly tried this on my 4 gig cards and it seems to work ok. Should possibly work with other size cards.
What I found out while running a card speed test is that my cards were only reading at abt 2mb/s after playnig the speed increased to 11mb/s Used Blackspeed v 1.0 for test Google it.
Test speed before and after
If card info is FAT or FAT16 your card is formatted ok.
Check yours
Connect the psp to pc via usb and go to My Computerand click on the drive of the PSP
Look where it say's details on the left hand side.
It should read FAT if it reads FAT32 you need to format the card to FAT16 to do this.
Before you go any further BACKUP THE MS CARD to your COMPUTER
Say your PSP drive is X
1. Go to Start-> Menu-> Run...
2. Type Format X: /FS:FAT space between : and /
Use windows explorer to reinstall your file structure on the card afterwards
then try your card again
If you reformat the card via the Format Card in the PSP System menu it will only format to FAT32 on a 4 gig card
PS. I didn't write this guide, I am merely a library for useful information.
