So I lowered my game FPS limit to 60 , and everything became much more smooth. Although it's annoying when WOW TBC Gold you're able to see your back at 60 after playing for a long time but it's much better than the flickering that I experienced.
After tweaking my settings and limiting my framerate to 60 frames per second, I had a fair amount of flickering, as I wrote in my last blog. Although I was sure that it was due to my GPU some part of me believed it was my GPU that caused the issue. My GPU could not be able to handle other games. It's time to upgrade my GPU and I'll require a new one. (I had planned to upgrade my GPU but ...) however, I think that cheap WOW Classic TBC Gold the GPU is in good shape. There aren't any problems with the hardware.