To ensure we are same page, would you mind to further elaborate on the following:
1. Mind share with me the specific Quartus version, device and the DSP IP that you are using?
2. Would you mind to share with me some screenshots with explanation on your issue observation to facilitate further understanding.
3. If there is any simple design QAR, please feel free to share with me so that I can have a better understanding of your configuration.
Please let me know if there is any concern. Thank you.