Adobe Premiere preview video lagging
It sounds like a combination of two things from the comments discussion.  First, with the very high frame rate, your laptop simply can not handle the high data rate.  If you need to edit on the laptop, I would suggest re-compressing the video down to a smaller size and then when you are done, you can replace the low quality footage with the original for the final output.

The second problem is that it appears Premiere is interpreting the footage wrong.  There is an  Interpret Footage option if you right click on the clip and go to Modify, Interpret Footage.  You can confirm the frame rate is correct on the source.  If it is, then you also want to check the framerate on the sequence itself.  Right click on the sequence, choose Sequence Settings and verify that the frame rate is correct there as well.  If both of those are correct and you are still getting the issues, then I am unsure what could be happening.