Where is the weak point of a gaming computer with such a configuration for GTA V?

Question

Iron

A friend was testing a new computer and, frankly, the games are very bad. GTA V doesn't dip below 40FPS only at the lowest settings, although the reviews and benchmarks of the graphics card are impressive.
Computer configuration:
- Processor AMD FX 8320
- RAM Hynix 8Gb*2 (16Gb) 1600MHz
- Video card ASUS Radeon RX 480 STRIX-RX480-4G-GAMING, 8GB, 1200MHz.
- Mat. Asus board
- SSD 500GB
- Windows 10
The problem is that the game goes better with simpler hardware on a laptop, so we think what is the reason.
We tried to overclock the processor to 5000MHz, there is no difference. Drivers are official and latest.

Answer 1

But no, I made a mistake, I had to install the latest drivers from Cataglist, everything works at maximum speeds of 60fps.

Answer 2

GTA is a very processor-dependent game, and you have a weak processor, to put it mildly.

Answer 3

Um, what are the hards in the laptop and on the computer?

Answer 4

What is the video card on the laptop? maybe there is faster memory or more shaders? Maybe the resolution is lower on the laptop and, accordingly, the rendering is faster?
Measure parrots in video tests.