Due to a problem in the Intel® Quartus® Prime Pro Edition Software version 21.1, you may encounter the EMIF Efficiency Monitor counters “No readdatavalid Count” and “Master Write Idle Count” continue to incorrectly increment after the Intel Agilex® 7 DDR4 IP EMIF Traffic Generator 1.0 (TG1) has completed sending traffic and subsequently resetting the Efficiency Monitor status registers by clicking on the Clear Status Registers button.
This problem is fixed starting with the Intel® Quartus® Prime Pro Edition Software version 21.1.