I am the user of ideapad 320 with amd A12 processor and dual GPU that is r7 and r7 m440 have struggling finding right configuration that in the end... The best choice is
-activate switchable gpu on power
management
- maximum memory on msconfig.exe
- increase paging file
- and the most important is " DISABLING AMD CROSSFIRE "Aka dual graphic feature... Is the right option
Let the application automaticlly chose the discreet graphic for performance setting.
Windows 10 will not reading your r7 m440 having a vram because is that not having own vram but shared (4gb that writen on desc) with your physcal ram that 8 GB or something elese.
Let me tell you lenovo ideapad 320 with A12 apu r7 is discontinued product giving me stress for 4 years but now i found my way playing watchdogs 2 on 50 fps.. just follow my instruction.
Don't tell me , i was trying for 4 years .. asking why it using PCI express 3.0 instead 1.0 , why task manager read the dedicated only 512mb, is that any setting on bios? But my bios doesnt have advance setup. Well i glad i knowing that what i said before and can work and sleep better