Your pic is showing the 460 (83%) being used.
Owh ok, but shared memory not use, why? What must i do
I have the sane problem. unfortunately couldn't find a solution.
I have a laptop (Asus X550IU)
CPU: AMD FX-9830P Radeon R7
Display adapter: RX460 4Gb
RAM: 16 Gb
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The problem is Display adapter
It uses only 1 Gb of 4Gb RX460
In the AMD UI it shows correct value but I can never use that amount.
More details Screenshots below.
There is no REAL RX 460 on X550IU.
That's just a name on the VGA.
You actually have 1G VRAM NOT 4G VRAM as RX 460 has.
I Red almost all posts about X550IU in AMD community, ASUS Community, reddit, ... No one who owns X550IU could never use more than 1 G VRAM. I Must say We paid for a garbage.