Good afternoon everyone,
I just got off the phone with VMware and they have identified the problem and it will be fixed in 6.5 Update1. Update1 will be released sometime in July. I'm not sure of the exact day for the release.
Here is the summary of my call with VMware.
As per the current issue, we see that the disk Queueing is recorded once the hardware version for the VM is higher than the 10. The issue is only seen when the host is installed with vSphere 6.5 and the hardware version is higher than 10.
We already have the same reported with the engineering team and we are currently working on the same. The current workaround is to retain the hardware version to 10 or lower where the OS version is set to Win 2012 or higher. This issue is temporarily pointing to be caused due to the virtual disk polling enhancement. We do not have a definite solution yet and are currently working on the same.
As we have agreed, your support request is ready to be closed. If you come across any additional queries within 21 days, please contact me and I will be happy to reopen the ticket and continue working with you.