Quartus 19.1 Standard on Windows and Stratix IV Hard Pci-Express missing file

Thank you for the clarification.

I am reverting back on Q18.1 to use PCIE, just in case, to avoid any problem.

I was trying to compile some example of the DE4 dev board but internal timing of the PCI IP are failing:

pcie|pcie_internal_hip|stratix_iv.stratixiv_hssi_pcie_hip|coreclkout setup slack -1.194

Is something that can be ignored?