so i have a Asus x555b laptop. It has 2 graphic card,my primary is AMD Radeon R5 512 mb, and AMD HD 8500M 2048 mb (switchable). The problem is when i check graphic settings in gta 5. It only detect the 512mb graphic card ( which is the radeon r5) and same with War thunder. So, how to make all of my games use the HD8500M that has 2048 graphic memory ?. (Sorry for bad english)
Open graphics control Pannel and in switchable graphics area select your applications in which you want to run on dedicated GPU. And save your settings. When ever you run your Game. Then graphics will automatically switched to AMD Radeon HD 8500M.