Wifi vs. Hardwire Connection

Is there a big difference in wifi vs hard wired?

If so, I cannot hardwire my system without some major cable and drywall work. However, is there any product you recommend that can boost your wifi?

Just trying to find any efficiency I can...

I don't think the game plays better. If you're not losing connection a lot, I wouldn't worry with it.

Wifi is, and will always be inferior to a wired connection. for most cases, it really isn't an issue. But playing games online, especially competitively, it is always better to be wired if possible. doubly so when a game uses delay to deal with lag (Such as MLB The Show)