High Share rejected rate

![20220205214622](https://user-images.githubusercontent.com/95366323/152644635-2738e477-f214-41da-a0a1-09af2a1f0e0b.png)


I am using lastest miningcore-dev version , I got high share rejected rate with ASIC a10 .
my config.json :

            "ports": {
                "8888": {
                    "listenAddress": "*",
                    "difficulty": 1.5,
                    "tls": true,
                    "TlsPfxPassword": "xxxx",
                    "TlsPfxFile": "xxxx",
                    "varDiff": {
                        "minDiff": 1.5,
                        "maxDiff": null,
                        "targetTime": 15,
                        "retargetTime": 90,
                        "variancePercent": 30
                    }
                },
                "9999": {
                    "listenAddress": "*",
                    "difficulty": 1.5,
                    "tls": false,
                    "varDiff": {
                        "minDiff": 1.5,
                        "maxDiff": null,
                        "targetTime": 15,
                        "retargetTime": 90,
                        "variancePercent": 30
                    }
                },
               "7777": {
                    "listenAddress": "*",
                    "difficulty": 16,
                    "tls": false,
                    "varDiff": {
                        "minDiff": 16,
                        "maxDiff": null,
                        "targetTime": 15,
                        "retargetTime": 90,
                        "variancePercent": 30
                    }
                }

               },

7777 port is for ASIC 