Hello
So having tried PCSX2 on much older and weaker hardware in the past with very slow gameplay, I am happy to say that on my new laptop, it runs surprisingly well. I've only tested Timesplitters and Devil May Cry so far which are (I think) quite early PS2 games. Timesplitters went all weird in hardware mode (said 100% speed, fraps said full FPS but menu was really really slow and laggy) so had to put it software mode DX11 but ran really smooth for the most part, only slowing down when too many bots are armed with rocket launchers... Devil May Cry seemed to go okay too, but again in software mode. In hardware mode it kinda cropped the bottom of the screen off and moved it to the top left corner, sometimes it would move to the middle left of the screen. But for very basic PS2 emulation, so far so good all things considered.
Specs: HP Notebook, 15.6" 1080p screen, i7-7500U @ 2.7Ghz (max 3.5Ghz, typical max of 3.0Ghz when playing normal hardware accelerated games due to power throttling which I cannot seem to turn off), Intel HD 620, 1x8GB RAM, 1TB HDD, Windows 10.
Nothing special but shows it can at least match a PS2 for the most part, perhaps it will get better as the emulation improves over the coming years (I still find it amazing that my Android phone can run PS1 games at all, yet it runs them perfectly).
Disclaimer: I just did this purely to try it out and see how it compared with my previous machines so don't go buying laptops for PCSX2 based off this post as you will be disappointed!