Adobe Photoshop Lightroom very laggy on Microsoft Surface Book 2

Hi Team,

I am having an issue with editing photos, etc. on my Lightroom. The version is 5.4 and my Surface Book 2 doesn't have a special NVIDIA GPU, just the stock standard Intel HD Graphics 620. My Surface Book 2 is the 13.5" one. 

Does that mean it is not just strong enough, although this is a rather new line of laptop by Microsoft and considered top of the line within the Surface models ?

Please share some thoughts on how to alleviate the slowness as I am an avid photographer and don't really use Mac Products

Look forward to hearing from you