All throughout the "The Inlet, City Building Contest" thread, I could not help but notice folks having very similar lag and crashing issues as their cities grew in size. In my case, playing XXL(2015), I built/completed my city up to about 1.2 mil population with absolutly no lag or crashing. But....I intentionally left out any plazas, forest and such until the very end. When I finally started adding plazas and forest fillers, I immediately began having lag problems and crashes. I have many plaza mods, most of which are XL mods, including some that I have edited myself to work in XXL. In order to complete a city, I am forced to reducing plaza mods to default game ones and those that are only in the XXL resources. Even then, lag is serious and crashes are often. For taking contest screenshots, I had to plan my camera position, decorate only the area in view, take the shot, remove the plazas, and then repeat the entire process for the next screenshot. I generally understand why/how plazas, especially trees and some furnitures, can be demanding on a graphics processor. I'm confident to rule out my pc as the main problem, as I have a strong desktop machine. To the point (finally): Is it the game engine or issues with the plaza mods? What can be done to address these issues? As you know, XXL is in need of many more plaza mods. No city is complete without the "icing on the cake". Thank you for your time and Lastly, my thanks go out to the folks that have worked so hard to create all the great mods we now have.