Hello @Timmy_Chen,
Thank you for providing that additional information. I remember there being a similar case with another user who had a Netgear Orbi router, and IGMP Proxying was creating an issue with his playback as well. I would take a look in the settings and see if you can disable that option to improve stability. The thread I am referring to can be found here:
Please give that suggestion a try and let me know if you are still experiencing playback issues. You might also want to try and disable the DSP function on Roon temporarily to see if that has any affect in increasing stability. Please let me know your findings when possible.
Thanks,
Noris