FlashFXP uses the default winsock packet size, which is 8192.
I personally have not tested FlashFXP with LAN transfers (I only have one computer
)
However in the past I have done some experimenting with end users on their LAN and we were unable to find any major speed increases when changing the packet size.
If you're interested in testing different packet sizes email
support@flashfxp.com and I'll send you a special version that will allow you to change the packet size.