Have you preview rendered the project on your new laptop yet? This may be one of the first things you did but just to check, highlight your entire timeline and hit the enter key. Other than this, I cant think of what it might be. I will do some more research and get back to you. But as for your laptop, it is more than powerful enough to run premiere the way it should! An afterthought - check your GPU drivers are up to date, and that you are also running the latest premiere version (which I'm assuming you are as you've just downloaded it to a new device) ... View more

Make sure you are running playback using your GPU. As a default on your new laptop your playback may be using your processor which usually gives a slower/laggier playback. Go to File>Project Settings>General and then under Renderer ensure that the Mercury Playback Engine GPU Acceleration (CUDA) is selected. Alternatively, if possible, select the (OpenCL) version, just don't use Software only would be my advice, despite your powerful CPU. Hope this makes sense. ... View more