Well-made ones, no.It won't affect performance will it ?
Well-made ones, no.
Poorly made ones may perform somewhere between random crashes due to excessive ripple or low voltage on the GPU's VRM input from excess resistance and starting a fire for various reasons such as loose wires in connectors from under-crimping, broken wires in connectors from over-crimping and excessively loose terminals. There was a post from someone last week who had his after-market cables partially melt a GPU connector off.