--- title: "Lesson 6.1 - Project Optimization" content_type: tutorial url: "https://learn.unity.com/course/create-with-code/unit/next-steps/tutorial/lesson-6-1-project-optimization-1?language=en" language: en container_type: course container_title: "Create with Code" container_url: "https://learn.unity.com/course/create-with-code.md?language=en&version=6.0" unit_title: "Next Steps" unit_url: "https://learn.unity.com/course/create-with-code/unit/next-steps?language=en&version=6.0" standalone_markdown_url: "https://learn.unity.com/tutorial/lesson-6-1-project-optimization-1.md?language=en&version=6.0" previous_title: "Next Steps - Introduction" previous_url: "https://learn.unity.com/course/create-with-code/unit/next-steps/tutorial/next-steps-introduction?language=en&version=6.0" previous_markdown_url: "https://learn.unity.com/course/create-with-code/unit/next-steps/tutorial/next-steps-introduction.md?language=en&version=6.0" next_title: "Lesson 6.2 - Research and Troubleshooting" next_url: "https://learn.unity.com/course/create-with-code/unit/next-steps/tutorial/lesson-6-2-research-and-troubleshooting-2?language=en&version=6.0" next_markdown_url: "https://learn.unity.com/course/create-with-code/unit/next-steps/tutorial/lesson-6-2-research-and-troubleshooting-2.md?language=en&version=6.0" difficulty: beginner duration_minutes: 30 unity_version: - "6.0" - "6.3" supported_unity_versions: - name: "6.0" url: "https://learn.unity.com/course/create-with-code/unit/next-steps/tutorial/lesson-6-1-project-optimization-1.md?language=en&version=6.0" - name: "6.3" url: "https://learn.unity.com/tutorial/lesson-6-1-project-optimization-1.md?language=en&version=6.3" - name: "2022.3" url: "https://learn.unity.com/course/create-with-code/unit/next-steps/tutorial/lesson-6-1-project-optimization-1.md?language=en&version=2022.3" - name: "2021.3" url: "https://learn.unity.com/course/create-with-code/unit/next-steps/tutorial/lesson-6-1-project-optimization-1.md?language=en&version=2021.3" last_updated: "2026-08-04T14:23:16.000Z" --- # Lesson 6.1 - Project Optimization Explore core optimization techniques to boost project performance, especially for larger mobile and web builds. **Overview:** In this lesson, you will learn about a variety of different techniques to optimize your projects and make them more performant. You may not notice a huge difference in these small prototype projects, but when you’re exporting a larger project, especially one for mobile or web, every bit of performance improvement is critical. **Project Outcome:** Several of your prototype projects will have improved optimization, serving as examples for you to implement in your personal projects ## Materials - [Object Pooling.zip]() ## 1. Variable Attributes In the course, we only ever used “public” or “private” variables, but there are a lot of other variable attributes you should be familiar with. [Video](https://connect-mediagw.unity.com/h1/20241208/videos/611ac03f-3006-4ddb-85c4-c7e65c1698fb_CWC_U6_L1_S1_U6.mp4) ([Transcript (en)](https://storage.googleapis.com/learn-platform-bucket-production/tutorial/8fd27a44-aa3b-49c2-a466-64d4ae94dd1b/versions%5B_key==%22c1c17e97860a%22%5D.sections%5B_key==%22HDmOj4kM4HVkJkWHXY1vsz%22%5D.body%5B_key==%22HDmOj4kM4HVkJkWHXY1vxr%22%5D.subtitles/Lesson%206.1%20-%201.%20Variable%20Attributes_20260623_015526.vtt)) 1. Open your **Prototype 1** project and open the **PlayerController.cs** script 2. Add **\[SerializeField\]** at the beginning of the line for your private attributes, then edit the values in the Inspector 3. In **FollowPlayer.cs**, add the **\[SerializeField\]** attribute to the Vector3 **offset** variable 4. Try applying the “**readonly**”, “**const**”, or “**static**” attributes, noticing that all have the effect of removing the variable from the inspector ![](https://connect-mediagw.unity.com/h1/20250522/learn/images/6fb4d094-fb68-442c-a93f-12eaab66ace6_6.1.1._Variable_Attributes.png) ## 2. Unity Event Functions In the course we only ever used the default Update() and Start() event functions, but there are others you might want to use in different circumstances. [Video](https://connect-mediagw.unity.com/h1/20241208/videos/6d422acc-5f6c-4bd1-b130-64063639175c_CWC_U6_L1_S2_U6.mp4) ([Transcript (en)](https://storage.googleapis.com/learn-platform-bucket-production/tutorial/8fd27a44-aa3b-49c2-a466-64d4ae94dd1b/versions%5B_key==%22c1c17e97860a%22%5D.sections%5B_key==%22HDmOj4kM4HVkJkWHXY1wwk%22%5D.body%5B_key==%22HDmOj4kM4HVkJkWHXY1x1c%22%5D.subtitles/Lesson%206.1%20-%202.%20Unity%20Event%20Functions%20%20_20260623_015542.vtt)) 1. **Duplicate** your main Camera, rename it “Secondary Camera”, then **deactivate** the Main Camera 2. **Reposition** the Secondary camera in a first-person view, then edit the **offset variable** to match that position 3. Run your project and notice how choppy it is 4. In **PlayerController**.cs, change “Update” to “FixedUpdate”, and in **FollowPlayer**.cs, change “Update” to “LateUpdate”, then **test again** 5. **Delete** the Start() function in both scripts, then reactivate your Main Camera ![](https://connect-mediagw.unity.com/h1/20190702/learn/images/148bf603-7d52-41c5-8031-00d27ea26245_Screen_Shot_2019_07_02_at_4.09.41_PM.png) ## 3. Object Pooling Throughout the course, we’ve created a lot of prototypes that instantiated and destroyed objects during gameplay, but there’s actually a more performant / efficient way to do that called Object Pooling. [Video](https://connect-mediagw.unity.com/h1/20241208/videos/7646af52-55a5-464e-842e-45a7143c4a77_CWC_U6_L1_S3_U6.mp4) ([Transcript (en)](https://storage.googleapis.com/learn-platform-bucket-production/tutorial/8fd27a44-aa3b-49c2-a466-64d4ae94dd1b/versions%5B_key==%22c1c17e97860a%22%5D.sections%5B_key==%22HDmOj4kM4HVkJkWHXY1y2w%22%5D.body%5B_key==%22HDmOj4kM4HVkJkWHXY1y7o%22%5D.subtitles/Lesson%206.1%20-%203.%20Object%20Pooling_20260623_015600.vtt)) 1. Open **Prototype 2** and create a backup 1. Delete the **DetectCollisions**, **PlayerController**, and **DestroyOutOfBounds** scripts from your project 2. **Download** the **[Object Pooling](https://unity-connect-prd.storage.googleapis.com/20200422/b9f723f1-2e90-4b7a-872b-379160bf81d0/Object%20Pooling.zip)** unity package and **import** it into your scene 3. Reattach the **PlayerController** script to your player. Reattach **DestroyOutOfBounds** script to your animal and food prefabs, and then reattach the **DetectCollisions** script to your animal prefabs (**_not_** to your food prefab) 4. Attach the **ObjectPooler** script to your Spawn Manager, drag your food projectile into the “**Objects To Pool**” variable, and set the “**Amount To Pool**” to 20 5. **Run** your project and see how the projectiles are activated and deactivated ## 4. Lesson Recap **New Concepts and Skills** - Optimization - Serialized Fields - readonly / const / static / protected - Event Functions - FixedUpdate() vs. Update() vs. LateUpdate() - Awake() vs. Start() - Object Pooling