[RMMV] MINIMUM HARDWARE SPECS TO RUN 60 FPS?

Just looking for some numbers to work with before I buy a new computer. Currently my HP laptop runs RPGMV at 40 FPS.
I made a graph to show FPS performance over the course of drawing pictures with the show picture command, and found some unexpected results:

0-39 Pics = 40 FPS
40 = 39 FPS
41 = 38 FPS
43 = 37 FPS
45 = 36 FPS
47 = 35 FPS
50 = 34 FPS
53 = 33 FPS
56 = 32 FPS
60 = 31 FPS
62 = 30 FPS
65 = 29 FPS
69 = 28 FPS
72 = 27 FPS
76 = 26 FPS
80 = 25 FPS
84 = 24 FPS
90 = 23 FPS
95 = 22 FPS
100 = 21 FPS
107 = 20 FPS
114 = 19 FPS
123 = 18 FPS
131 = 17 FPS
142 = 16 FPS
155 = 15 FPS
At this point I got bored and intentionally tried to crash MV, but to no avail. By the time 800 pictures were drawn, MV would crawl at 2 FPS and would not drop anymore, no matter how many pictures were drawn. These numbers stayed consistent whether the maxPictures were 50 or 1200.

Needless to say, it's time for an upgrade. Also note that the decay in frame rate drops precipitously when you hit 90 pictures and up. Why is that? Also notice how there is no drop in frame rate at all between 1 and 39 pictures.

EDIT: Just downloaded and played a demo game called "The Tavern". By the time I got user input, it was running at 12 FPS. What's the best laptop or tablet to play these games on?
EDIT II: Thank you kory toombs! Found out some more info.
Set my laptop to run 60 FPS, also added TorDamian's Fluidstep Plugin, and SumRndmDde - Fast Forward. Honestly, it made little difference! Playing at 1.5x speed gets me close to where I need to be, but still very choppy. FPS dropped to the same depths as well in the show picture test. After considering VX Ace performance, porting to Ruby has never sounded so good!

This is why I was asking about a variable parameter Wait command last week! The idea is to 1) Detect the player's rate per their machine... and 2) adjust the wait times appropriately based on this, so picture-based animations would appear more consistent over different machines.