Fitter Optimization Related concepts Auto Delay Chains logic option Auto Global Clock logic option Auto Global Register Control Signals logic option Auto Merge PLLs logic option Automatic Asynchronous Signal Pipelining -- Allow Asynchronous Signal that Fans Out to Synchronous Inputs logic option Enable Bus-Hold Circuitry logic option Exclusive I/O Group logic option Final Placement Optimizations logic option Fitter Aggressive Routability Optimizations logic option Optimize IOC Register Placement for Timing logic option Perform Register Retiming for Performance logic option Placement Effort Multiplier logic option