I use Excel connected to Dynamics 365 to make bulk edits to our product reference data in Dynamics, for example, price changes, or description changes. The Data Connector times out after an hour and during that time only approximately 1000 changes are processed. If my table has more edits than that I reload and try again and the next 1000 changes get processed, and so on. This is extremely tedious and I know it is not normal. We have a sister company that also uses Dynamics 365, with an almost identical set-up, and it only takes me a few minutes to publish 1000's of changes in that system. Our developer has not yet managed to identify the cause of the problem. I would be very grateful for a troubleshooting checklist for potential causes of this slowness.