I'm not on a laptop, but apparently my PC is a bit low end for PlaneShift nowadays - no wonder, it's 9 years old. BUT the only difference between a lap and a desk is a few fans and that everything is crammed together.
That being said, I'm playing on a 256Mb VRAM, 4Gb RAM, 3.06GHz 2 core machine. The rest is addons. The client runs just about... "fine" to say something. But consider the following: if you're looking to be up to date with UE4, you should plan ahead.
Think that Epic Games won't stop there and go further with UE5, so I'd recommend someting with 2Gb of VRAM tops, 8Gb RAM, and any CPU with at least 4 cores, so we're talking an i5 or equivalent. I'm fairly certain you can find a lappy like that somewhere. But if I can recommend... building yourself a desktop might result in less of a headache and room for improvement later on.
Then again, I'm a cat, not a cop. So do as you wish. Am I the only one that has given him actual specs?