This is more of a question, so, when I'm on multiplayer, the game lags very often, Causing connection issues and FPS drops, we hues Hamachi to connect, is it Hamachi's fault or our internet's fault?

Yes! It worked, I put in the advanced launch option and it worked, it might've been the update, either way thank you all so much!

First of all thank you both for responding so quickly, I did find the log and this is what was in it:

0.033 2016-03-17 21:34:58; Factorio 0.12.26 (Build 17762, mac)
0.033 Operating system: Mac OS X 10.9.5
0.033 Program arguments: "/Users/[MY NAME]t/Library/Application Support/Steam/steamapps ...

I'm trying to start the game on a mac, and when I do, it send me a link to this file /Users/[MY NAME]/Library/Application Support/factorio I was really excited about getting this game, so please tell me how I fix this.