Anyone else get spontaneous time outs of Essentials?

We have been experiencing this for quite a while, and have worked with latitude support to no avail, so I am trying here. The essentials VM will spontaneously start timing out, and can only be fixed by a restart. We upgraded to the latest version (4.14.3), running on windows server (2012 R2 Standard) and are still experiencing the problem.

Perusing the core logs directory this DocumentStore.log entry seems to be right around the problem started occurring today:

[2021-09-01 14:01:19,093][WARN ][15 ][DocumentStore][Geocortex.Platform.Roles.DocumentStore.ElasticSearchClient.SendToElasticSearch] Exception Occurred: 'Error performing ElasticSearch operation http://($url):19201/_nodes ' details: WebException: The operation has timed out

  at System.Net.WebClient.DownloadDataInternal(Uri address, WebRequest& request)

  at System.Net.WebClient.DownloadString(Uri address)

  at Geocortex.Platform.Roles.DocumentStore.ElasticSearchClient.<>c__DisplayClass15_1.<SendToElasticSearch>b__1()

Followed by:

[2021-09-01 14:08:46,652][ERROR][35 ][DocumentStore][Geocortex.Platform.Role.Clients.DocumentStoreWatcherClient.RetrySendToDocumentStore[T]] Sequence contains no matching element

Anyone have any similar problems?