Embodiments of the disclosure provide a method, apparatus, and computer readable medium for optimizing memory card performance. The method includes: determining a plurality of different preset time intervals, the preset time intervals being determined beginning from clock-cycle starting points; sending test data to a memory card using each of the preset time intervals, respectively; reading from the memory card the test data corresponding to each of the preset time intervals; comparing the test data sent using each of the preset time intervals with the corresponding test data that is read; in response to the sent test data and the read test data being consistent, determining that the preset time interval is valid; determining at least one group of preset time intervals, each of the groups of preset time intervals containing a plurality of valid and successive preset time intervals; determining a group of preset time intervals containing a maximum number of preset time intervals as a target group; determining an average value of all the preset time intervals in the target group as a time interval for writing to the memory card.