You know I have a suggestion for you guys who are lagging, Un-park your cores if they are parked.

Right click > Task manager > Performance > Resource monitor, On the right side or where ever yours is at you will see that either you have 2 cores and 2 others are parked.

mine were parked I had same lag, I unparked my 2 cores and my FPS went up and my lag went away, not sure if it will help but it did for me just a thought.