To determine if a design would benefit from physical synthesis, evaluate timing
after placement. Analyze failing paths for fanout. High fanout critical paths can
benefit from fanout optimization. Additionally, high-fanout data, address and control
nets of large RAM blocks involving multiple block RAMs that fail timing after route_design might benefit from Forced Net Replication. For
more information on physical synthesis, see this link in the
Vivado Design Suite User Guide:
Implementation (UG904).