Why not just enter the bios and see if the igpu is disabled as suggested before spending money. Because if it is disabled then thats not the reason the ram is reserved and changing the cpu may not help.
Well i'm upgrading to the Ryzen 2600x in 2 months anyway but currently i'm using a bad APU and isn't good with my external GPU and i went into the bios and i do not see theIGPU i watched videos of other people doing it then have another set of settings they can go into something like AMD CBS i do not have it.. so where do i disable it then???? i cant find the "IGPU" so how do i turn it off???