Switchable graphics doesn't use my AMD Radeon HD 8670M

Hi guys i need help.

I have an Acer Aspire E1-572G (Windows 8.1 64-bit OS) with Intel HD Graphics 4400 and AMD Radeon HD 8670M. When i run games however, my laptop uses Intel card instead of my AMD card.

Things i've tried:

• Setting application to High Performance in Switchable Graphics
• Reinstalling AMD/Intel Drivers from both AMD/Intel sites and Acer sites (Used a proper uninstaller to remove all files)
• Disabling my Intel Graphic Card results in my laptop using Microsoft Basic Rendering Driver
• Uninstalling my Intel Graphic Card also results in using Microsoft Basic Rendering Driver
• Using CPU-Z shows AMD Radeon HD 8670M but most information are missing (unknown or 0) unlike Intel Graphics which displays everything. Upon clicking sensor, all my temperatures are set to 0 (which means it's not in use)
• Using dxdiag shows my Intel Graphics as default driver, not AMD.

I've tried everything i could possibly do so i'm seeking help from experts here. I've seen articles which stated that Windows 8.1 are buggy with Switchable Graphics and may cause problems like these. Is that true?

For dual mismatched GPU's like Intel/AMD I recommend using the laptop manufacturers drivers, over doing two separate driver installs. The laptop manufacturers driver is custom tailored for your dual switchable graphics. Which driver are you using now? I haven't had any issues in Windows 8.1 as far as my switchable graphics goes. Mine are AMD/AMD though so I can use a driver right from AMD's web site. I get all kinds of ccc has stopped working messages in Windows 10 though.

With the AMD+Intel combo your best bet is here if you want updated drivers: Catalyst UnifL – Catalyst Unified Leshcat Drivers - leshcatlabs.net