Due to a problem in the Intel® Quartus® Prime Pro Edition software version 18.1, you may see the data out of your RAM is delayed by a clock cycle. This problem occurs when the RAM block type is set to AUTO, the Clock Enable is connected and the RAM has been implemented as an MLAB. This problem only affects Intel® Stratix® 10 devices.
Device Family: Intel® Stratix® 10
Intel Software: Quartus Prime Pro
Last Modified: September 25, 2018
Version Found: v18.1
Bug ID: FB: 596720;