Have any of you experienced slowness on your new 4gb memory stick? Well first you need to check if you have a fake or a real one, the biggest way on how you can tell is by looking on your Memory Stick. Make sure you have “MagicGate” on it. Another way is to download the new PSXReality Memory Stick Tester v1.0. Well here’s how you can speed up the Speed on your 4gb Memory Stick (without FAT16, or FAT, your games may lag no matter what format!) Reason is because PSP reads/writes slower on FAT32 but reads/writes faster on FAT16. 2GB is formatted to FAT16 by default and 4GB is formatted to FAT32 by default. To increase your 4GB MS speed just like your previous 2GB, you need to format it as FAT16. Now, before you flame me saying 2GB is max for FAT16, you need to research more. However, 4GB FAT16 is not compatible with lower Windows versions (Win95/98/Me/MSDos) but is perfectly compatible with PSP and WinNT and WinXP. This is due to Microsoft hardcoded max cluster to 32k on Win95/98/Me/MSD