Maybe it's being weird when it switches GPUs.  Try hitting fn f7 and test

This is the problem I have the intel card cannot run 4k as it lags. You change resolution to 1080p and the lag is gone. I am running everything on the 1070 with fn and f7 and the lag goes away however it is not acceptable. Mine is having a new motherboard today hoping it would fix that problem but obviously there is going to be no point now.

I don't think its hardware related issue...

The lagg spike is gone if nVidia gtx1070 is used.

It only occurs when windows is trying to trigger main graphic's switch.

I did a little test:

I started the game and alt+tab out to windows, (now nVidia card is in use) clicking on the battery icon doesn't trigger the lagg spike.

Do you guys have same type of issue?

I am wondering is it something I should worry about?

Or its just software related issue and and update in the future will hopefully fix it...

To make it easy to understand my issue.

Every time the computer will switch from integrated graphics to nVidia gtx1070 it will stop everything for a second.

Is it normal?

Does it happen with your Alienware 2016 model?

Ugh so the dell repair guy who was supposed to show today didn't even turn up. Wasted all day at home not happy at all.