What is the High Speed setting in the Epson driver?
The High Speed printing setting relates to the printing method of the printer.
When High Speed mode is selected in the Epson printer driver, the printer prints in both directions (from right to left, then left to right [bidirectional printing]). Select this mode to obtain the fastest image printing - please note that as a result the quality of the print may be affected.
When High Speed mode is not selected or turned off, the printer prints in one direction only (from right to left [unidirectional printing]). Unidirectional printing is slower than bidirectional printing, and recommended for highest quality image printing.
This setting may only be available on certain quality and paper selections, depending on the driver.