Log Analytics - Response size too large

I'm using Log Analytics api on my dashboard and until a week ago it was working very nice, but then some api suddenly stopped working, with this error:

{
  "error": {
    "message": "Response size too large",
    "code": "ResponseSizeError",
    "correlationId": "552a4fc6-dcd1-4d21-9fd0-d6523dd4af77",
    "innererror": {
      "code": "ResponseSizeError",
      "message": "Maximum response size of 67108864 bytes exceeded. Actual response Size is 70694713 bytes."
    }
  }
}

Is it real the limit of 67MB in web.contents?

Is there any workaround to avoi the limit of 67 MB?