officer simms, just a quick search yields this about processors and game lag:
"Think of cores as two CPUs, and think of logical processors as each of those CPUs being divided into two though not physically. In the processor, there are 4 threads because 4 logical processors = 4 threads, meaning basically that 4 sequences of instructions can be carried out simultaneously for performance gain over 1 thread. If one of those cores (or threads) is used up at 100% and the other ones are at 50% or so it can cause lag while gaming. It does not need to be the whole CPU at 100% to cause lag, only one core needs to be overflowed."
So that may explain why you have lag in the first place but the question is, what is causing it. Are there certain settings pre-configured in your game which are designed to use more of the CPU and what other processes are running on your laptop whilst you're playing?
I have V installed on a very low end PC and despite a little choppiness here and there, its playable and yet my machine, the CPU in particular doesn't even meet minimum reqs.. In my case, I'm thinking it has to do w/ other processes like Social Club subprocesses, and/or STEAM because I have the Steam version... Personally, I already dislike laptops just because they tend to have so many extra processes running just because they're laptops, like touchpad processes, other pieces of software for maybe the wireless adapter and a number of pre-installed software.
You didn't specify either how much RAM your laptop has.. And it would help to change your text color because to "us" it appears a dark gray.. I had to highlight it to be able to see it better...
I'm not sure how to assess your integrated graphics, although it is said that the "faster versions" are on "core i7 machines which can play modern games as of 2015 on low settings". So it could also be that your 520 on an i3 could be struggling a bit, Idk, sorry I just don't know enough about laptop integrated graphics..
Anyways, you could go into the game settings and see if you can make sure that EVERYTHING is as low as it can possibly be. I know that in my case, on my desktop, it has an indicator bar for how much of the available VRAM is being used as I make adjustments. I think there is a color scheme that goes from green to yellow to red, obviously indicating you're approaching the limits of your graphics device as you increase settings.. Right now, on this near 10 yr old PC, on lowest settings, its using about 970MB of a 1023MB (1GB) card. Then there are some items in the list which don't affect VRAM but the CPU...