Hi Daniel,
In order to better assist you, it will be great that if you can share the PCIe AVMM IP setting, and also what simulator that you are using?
From my side, I have performed the following test but did not see the problem in simulation:
- Generate the PCIe Gen3x4 AVMM example design from Platform designer by using Quartus v18.1
- Open Modelsim SE-64 10.6d
- Change the directory to /pcie_example_design_tb/pcie_example_design_tb/sim/mentor
- Type ld_debug from the transcript
- Add waveform
- Type run -all from the transcript
- The simulation is a success : - SUCCESS: Simulation stopped due to successful completion!
Regards -SK