Critical warning (12288): Fitter is ignoring the value of Router_Effort_Muliplier since that option is no longer supported

Description

Starting with the Quartus® II software version 13.0, the option Router Effort Multiplier is no longer supported for designs targeting Stratix® V, Arria® V, or Cyclone® V devices because Fitter algorithms have been changed so that this option is no longer needed.

Resolution

If you need additional routing optimization, you may choose to use the option Router Timing Optimzation Level. Note that using this option greatly impacts compilation time.