At the end of the config_2regslice.ini file, there are additional Vivado options given to the Vitis compiler linker.
prop=run.impl_1.STEPS.ROUTE_DESIGN.ARGS.MORE OPTIONS=-tns_cleanup
param=project.writeIntermediateCheckpoints=1
prop=run.impl_1.STEPS.PLACE_DESIGN.ARGS.DIRECTIVE=ExtraNetDelay_high
prop=run.impl_1.STEPS.PHYS_OPT_DESIGN.ARGS.DIRECTIVE=AggressiveExplore
prop=run.impl_1.STEPS.ROUTE_DESIGN.ARGS.DIRECTIVE=AggressiveExplore
These are the combination timing closure strategies applied during placement, route, and physical optimization that resulted in timing closure.