So there is really no extra benefit to garrisoning an archer in a building when compared to other infantry. Where should archers be placed for extra arrow benefit?

Any garrisoned citizen soldier or champion adds to the arrow count of those buildings.  Garrisoned women don't add any. Try to send them into houses, instead. 

Theoretically, garrisoned archers should be adding extra arrows to a buildings defense. Do they really? I get the impression that garrisoned regular infantry also does that, so there may be no benefit to having archers in a building? Of particular concern: community centers, military colony, stone towers, and castles.

Petra AI: "I'll help you now Deicide4u, but in future, you should learn to manage your resources better." *Petra has gifted you 76 Metal.* Gee, thanks Petra 

Gpu skinning is broken on some GPUs. Will hopefully be fixed when A27.1 comes out

Yes, correct for both.  Units are only broken when enabling GPU skinning during a game and it seems to only effect current units, and when their broken, they don't even look like units, they look like never ending lines of color I re-enabled GPU skinning during a game to get a screen shot of broken units looking like never ending lines. Tried getting a screen shot of the units after restarting the game with GPU skinning enabled, but weirdly, instead of getting with units with artifacts(different from the image, more the units not rendering correctly) the game closes with no error message as if I opened task manager and closed the game. Tried restarting the game multiple times with GPU skinning enabled not toughing any setting, and game starts to load then closes with no error message. I opened the game, disabled GPU skinning, exited the game and reopened and it back to working normally. So diffidently an issue going with the game and my hardware not liking each other as the game works flawlessly on my desktop.

You're probably looking for the multiplayer lobby. "Join Game" is for directly joining a game, "Game Lobby" for the multiplayer lobby.