# Lag from tall buildings?
**URL:** https://discourse.cataclysmdda.org/t/lag-from-tall-buildings/14079
**Category:** The Garage
**Created:** [August 2, 2017, 7:25pm UTC](https://discourse.cataclysmdda.org/t/lag-from-tall-buildings/14079 "2017-08-02T19:25:13Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@TheKobold](https://discourse.cataclysmdda.org/u/TheKobold)
#### Post date: [August 2, 2017, 7:25pm UTC](https://discourse.cataclysmdda.org/t/lag-from-tall-buildings/14079/1 "2017-08-02T19:25:13Z")
I have z levels on and tall buildings also more locations. Both from within the game if that makes a difference.
Every time I pass a 3 story brick house I get serious lag and slow downs.
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### Author:  [@Coolthulhu](https://discourse.cataclysmdda.org/u/Coolthulhu)
#### Post date: [August 2, 2017, 7:53pm UTC](https://discourse.cataclysmdda.org/t/lag-from-tall-buildings/14079/2 "2017-08-02T19:53:17Z")
Do you have experimental 3D vision on?
Just the vision - it is seriously unfinished. Other z-level code is fine, but vision is very inefficient.
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### Author:  [@TheKobold](https://discourse.cataclysmdda.org/u/TheKobold)
#### Post date: [August 2, 2017, 8:00pm UTC](https://discourse.cataclysmdda.org/t/lag-from-tall-buildings/14079/3 "2017-08-02T20:00:13Z")
Yea I do. It’s probably that isn’t it.