my acer aspire timeline x 5820-6406 is eing sooooo slow like literally itt was able to play gta 4 high settings its spec: 2.67 ghz quad core i5 processor and its got 8 gb ddr3 memory and even when i replace the 8gb with differ ram it still sloooooow as hell why???!!! like why just whyyy also its amd dedicated and intel core i5. and its slow as hellll