Setting the TFTP Transfer window.

[TFTP-Settings]
TransferWindow=1          ; Default: 4

The tftp-setting TransferWindow sets the maximum number of tftp data packets that are sent before an acknowledge is received. TFTP protocol standard behavior is achieved by setting TransferWindow=1. The default of 4 should increase TFTP performance by about 50%. In case of problems try to set to 1.