Increase type delay for slow connections to virtual machine consoles :-

If you access a virtual machine console over a slow connection, you'll encounter keyboard sync issues. Virtualization expert Rick Vanover shows how to configure a value to reduce this frustration.

This configuration is written into the virtual machine's .VMX file, which details what the virtual machine has configured. The .VMX file is what vCenter Server uses to inventory virtual machines on an ESX(i) host. The line shows up as:

keyboard.typematicMinDelay = "2000000"

You can edit the .VMX files directly, but a better practice is to configure this value within the vSphere Client for a virtual machine template. When you consider that most of the access to a virtual machine is provided by tools such as remote desktop, there is no harm in configuring this value globally for all virtual machines that originate from a template.