# Game Hitches (GC Mark Time?)

**URL:** <https://forums.unrealengine.com/t/game-hitches-gc-mark-time/308039>\
**Category:** C++\
**Tags:** lag, unreal-engine, UE4, CPP, question\
**Created:** [February 25, 2015, 10:00am UTC](https://forums.unrealengine.com/t/game-hitches-gc-mark-time/308039 "2015-02-25T10:00:08Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![MickD777](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@MickD777](https://forums.unrealengine.com/u/MickD777)\
**Post date:** [February 25, 2015, 1:35pm UTC](https://forums.unrealengine.com/t/game-hitches-gc-mark-time/308039/2 "2015-02-25T13:35:17Z")

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Hi , you are probably right that it’s the GC running, and this is somewhat normal in Development build. To verify your performance, there is a command line that is helpful that should remove that lag : -NoVerifyGC  
From the documentation:

**-NoVerifyGC** Otherwise expect massive hitching in Release builds at least every 30 seconds or so.

This should not be present in Shipping build.

Here is the link to the documentation :

> **[Testing and Optimizing Your Content](https://docs.unrealengine.com/5.1/en-US/testing-and-optimizing-your-content/)**
>
> How to make sure your content does what you expect it to, at the quality and frame rates that you need.

Hope this helps!

Mick

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