I have a really strange issue happening in Blender. I have some simple low poly objects where I'm trying to build some RTS style buildings. The walls of my buildings are just some simple planes with a texture on top of them. If I duplicate them, for some reason it slows down my entire blender really hard, that you can't even use it anymore. Camera rotation or zooming in lags really hard. I thought at first that maybe it's a poly issue so I deleted my plane copies and then just created a bunch of monkey heads to see if I'd get the same thing and nothing. I then copied the material from one of my other objects to the monkey heads and applied the same texture atlas and still no issues. So 4-5 copies of a simple plane that has a texture on it makes my Blender lag, but 4-5 copies of monkey heads using the same texture does not. I'm using the Blender Renderer with Texture View.
Any thoughts on what could be going on? Thanks!
P.S. - I also thought that maybe it's due to having too many groups. All the duplicates would create a new group. Still didn't help.