Due to a problem in the Intel Quartus® Prime Pro software versions 19.4 and earlier, Intel Stratix 10 E-tile device unused transceiver protection was found to be non-functional.
You can protect your Intel® Stratix® 10 E-tile device unused transceiver channels from performance degradation by upgrading your Intel Quartus Prime Pro design to software version 20.1 or later and following the guidance in the Intel E-Tile Transceiver File IP Userguide, version 2020.05.22 or later.