Short answer no, your ping is what it is to the SERVER. You have no control about which way packets are routed past your home router, so in most cases the ping will stay the same.
Long answer maybe, if the cabling is crimped wrong it can cause all kind of packet loss, but just recrimping is usually a far simpler fix than running a new wire, but there's a lot of variables here like: cat7 is shielded, are you getting signal interference? If you use a layer 2+ switch, most of them have built in tools to test signal quality of your ethernet cables to the endpoints, if it's just home hardware, it's a lot harder to test.