Those countries dont exist. You'd be happy to get an RX 570 for the same price as a GTX 1060 6GB, generally.
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ADD: 2GB is not enough for modern games even in 1080p. If you want to for 1440p most of the time 4GB is not enough aswell. VRAM shortage of course directly affects your GPU performance: if your VRAM is full the rest of texture data will be saved to RAM, which is a lot slower than VRAM, and also has to be accessed through the CPU.