As of October 13, 2018, we adjusted the configuration of Finance and Operations Develop and Test environments for better performance. All new deployments have moved to Managed premium disks, optimized for DS12v2 VMs. Because of updates to code and metadata, development and testing requires extensive disk access operations. Moving to Managed premium disks will provide a much better performance experience for these operations.
We encourage you to deallocate, delete, and re-deploy new Develop and Test environments to take advantage of this new topology. Before you delete your Development or Test environment, make sure that you save all of your work, check your code into Azure DevOps (formerly known as VSTS), and make a local backup of any test database that you would like to preserve. Please allow up to 48 hours for a redeployment request to be processed (Most requests are processed faster).
We're always looking for feedback and would like to hear from you. Please head to the Dynamics 365 Community to start a discussion, ask questions, and tell us what you think!