Unity3d application development on Amazon Web Services - amazon-web-services

I ask here because I've asked on the Unity3D forums (in July) and nobody has responded, and I still have the same issue.
I have an AWS EC2 instance and I am using it to develop with Unity3D.
The problem is that while the keyboard and mouse work perfectly fine in the editor, the mouse stops responding when in "play" mode.
I access my EC2 instance via Windows Remote Desktop, I have an Administrators account and I have all drivers up to date.
Any ideas?
Update
I am doing research, so cross-platform compatibility is not a concern. I'm using Windows because the tools I require, require Windows. Changing OS is not an option.
I've tried starting the editor with admin. I've also tried launching the remote desktop with admin. Nothing fixes it.
Even the standard Unity3D demo applications have this issue, so it is not something that I am doing.

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