I have a potential fix for you, but I would highly suggest getting help with this if you are not comfortable with uninstalling and reinstalling system drivers as well as working with your system BIOS. While this fix won't break your system, these steps can be tricky if you are not familiar with doing so.
If you want to proceed, check out the following guide:
https://forums.autodesk.com/t5/hardw...l/td-p/4363279
Though it is written for an AutoCad user, it should walk you through the process of replacing your Optimus driver with a standard, "game ready" nVidia driver.
Your BIOS for an Alienware will likely be different than the one mentioned, so it will be up to you to find where the option to adjust Optimus settings is (there may be another guide for your specific laptop on this somewhere).
Once you have the standard nVidia driver installed you should be able to play without issue.