Thanks to TheLethalCreed who shared this link
https://gaming.stackexchange.com/questions/72567/can-i-force-steam-to-use-my-nvidia-gpu-instead-of-the-integrated-intel-card
we have a temporary fix for all the lagging issues.
Please follow the directions in this link and see if this fixes the lagging issues that some of you may be experiencing.
If there are still issues remaining, please post it in here so we can address them.
Thank you, dood!
Prinny Toshi