3.4.1. Placement Effort Multiplier Settings
The default value is 1.0, and valid values are greater than 0. Specifying a floating-point number allows you to control the placement effort. A lower value decreases the CPU time but may reduce placement quality. You cannot directly increase the Placement Effort Multiplier to a value greater than 1.0. Use predefined Optimization Mode settings to increase placement effort for improved timing optimization.