If a GPU is not seated properly, Windows cannot detect it, and your games cannot use the dedicated GPU. This can be the case with you. Completely turn off your computer and open its case. Unplug the ...
If you encounter a CPU bottleneck in games you play, upgrading to a new CPU makes more sense than buying a new GPU, especially if you mostly play multiplayer games. If you play games and earn a living ...
I find it particularly painful when I see people upgrading their PCs backwards, and sadly, it happens a lot. One sees a shiny new GPU launch, reads a few benchmarks, and feels that familiar itch.