High fanout nets are much easier to deal with early in the design process. What constitutes too high of a fanout is often dictated by performance requirements and the construction of the paths. You can use the following techniques to address issues with high fanout nets.
Recommended: Identify high fanout nets using the
report_high_fanout_netsTcl command after synthesis. Monitor the impact of these nets on design performance as you progress through the implementation process.