Illustrator Brad Colbow's video reviews are always good for their mix of information, insight and humor. He just posted his review of the m3 Surface Pro 4 and has scenes of it running Photoshop, Illustrator and Clip Studio Paint.
This is the same model that I glowingly reviewed yesterday and his results are radically different than mine. Although he is surprisingly positive on the product, I could never recommend the entry level SP4 if it was as laggy as he demonstrates here. Even stalwart CSP looks like it's having trouble keeping up.
I've asked Brad to share his exact settings so that I can try to reproduce his configuration (and the troubling strokes that he illustrates at about the 6:30 mark). I'll update my review or this post once I determine whether they are reproducible.
If any of you have seen similar behavior, please let me know in the comments section below.