The host is configured as direct ESX host for the special agent. But now the question why is it using piggyback data from somewhere (vCenter?) else.
If you have a vCenter then it is enough to query this and only use piggyback data for the hosts itself.
A little bit more load on the ESX should be no reason for timeouts on the API. If this is the case then also your vCenter gets no data as this is using the same API calls.
PS: password is not hidden 