Let me give you a little more details on this. I was trying not to bore anyone but it might help to understand the position I'm in. Right now, I live in a town of roughly 2,000 people and wireless internet is our only decent ISP option. It's a singly owner style company from a guy who recently got some training, then tried to start his own business. After he started getting more customers and receivers up, the internet got REALLY bad. He asked me to help him for reasons I don't understand. Sure, I'm an IT guy, but I deal primarily with building computers and Windows Server 2008 R2. I don't know much about this WISP thing at all. At the same time, the internet sucked sooo bad that I tried to do the best I can.
I found out his frequencies where way too close to each other. Once we got those spaced out, that fixed the web issues, but gaming is still pretty rough. Might always be the case but we don't seem to be bandwidth throttled. This is when I suspected a setting in either the airOS equipment, or the core router itself. This is when I started getting lost as well. I really shouldn't be doing this.
That said, each house has a dish that shoots to a tower above town. That tower has 9 receivers that are connected to the Mikrotik core router. That router is connected to a fiber line provided by an internet company from a neighboring town. We have around 500Mbps down and up, but only seem to use roughly 250 down at peak times. I don't know if that explains the bridge mode or not, but I hope it helps to some degree. It seems we need some form of NAT for the internet to work. For instance, if I disable NAT in my airOS transmitter in my house, while it's disabled in the airOS receiver on the tower, my internet goes down.
I'll try and get an export of the router tonight. I work at a hospital on T1s during the day so I don't have access to the router until I get home. Oh and I should mention that I had no hand in setting any of this up. I was just asked to help after the fact, to which the owner gave me access to the equipment so I could look at settings.