Due to a problem in the Quartus® II software versions 13.0 and 13.0 SP1, you may see reduced Nios® II Fmax performance for designs targeting Cyclone® V devices.
A patch is available to fix this problem for the Quartus® II software versions 13.0 and 13.0 SP1. Download and install the appropriate patch from the links below:
- Quartus II software version 13.0 SP1:
- Quartus II software version 13.0:
This problem is scheduled to be fixed in a future release of the Quartus II software.