Uniti Core packet loss when connect to Melco S100's 100Mb port

Hi, I just bought and finish setup the Melco/Dela S100 network switch and found the Uniti Core will packet loss when connect to 100Mb port, otherwise 1000Mb port is no issue.

Anyone has experience on this issue ?

Thanks and Cheers

Perhaps if you described how this manifests itself, you may get some responses.