High CPU usage

I run my game in Unity Editor 2018.2.15f1 takes 10 ~ 15% CPU
However, I build a exe for PC, Mac & Linux standalone. This exe take 60%~75% CPU.
I created a new project and didn't add anything to it, it's a empty project.
This issue happened too.
How can I reduce the cpu usage?

 

Could be that your .exe is running the game as fast as it can, which would result in more CPU usage, as well as probably 100% GPU usage.
Add the following line to one of your MonoBehaviours Awake() or Start() method.

Code (CSharp):

1. Application.targetFrameRate = 60;

That should make it run as fast as in the editor, if you have a 60Hz monitor, or haven't altered the refresh rate in windows.

 

Code (CSharp):

1. Application.targetFrameRate = 60;

Thank you. It solve my issue.

 

In reality you never had an issue. It's just a perceived one.

 

Application.targetFrameRate is not really a good solution, since it makes things annoying for people with >60Hz screens. Use vsync instead. Or at least if you want a 60fps cap, make it an option.

Well, no, excessive CPU/GPU usage drains batteries and causes heat/noise problems, it's a real issue that shouldn't be ignored.

--Eric

 

I am suffering from this problem.
In the compliant version, the CPU is in 50-60% usage.
The noise and temperature (with the risk involved) are very annoying.

There are developers who do not give importance to this, but it seems a very serious problem. The image is that the final game is badly thought.

I use VSYNC but I have to use EVERY SECOND so that the CPU usage is 20-30%.

Honestly, it seems like a huge Unity problem that I should face in some way. Except if Unity has focused on Mobile and has set aside the desktop.

 

thank you. this solved my issue so much. my CPU under Stats was running around 50-60 ms and it was so laggy. The minute I plugged this code on my Start() function my editor game run so much smoother!

 

could someone explain how to do this step by step? Super new to Unity and I tried building my project via WebGL and I had 100% CPU usage

 

To update things a bit, with the introduction of tech like G-sync, it can be appropriate to use targetFrameRate, however it should be an option and it should never be hard-coded as 60. High framerate monitors are also increasingly in use now.

--Eric

 

When in play mode, my cpu usage goes over hundred percent, computer gets heated very fast, so i cant stay in play mode for a long time. Yes, setting a target frame rate kinda solves the problem, but even with 60 frame rate, 75 percent cpu is still very high i guess. If you dont set a limit sometimes it reaches 200. Is 200%cpu usage normal, it gives like 250 frame rate then, but I feel like it is really problematic, maybe I do something wrong with my drivers or something, right?
For example while watching a film it is almost no gpu and cpu usage, but even in an empty scene in unity, cpu usage is easily over hundred in play mode, what can be the problem?

 

I also have a problem, as you can see.

 

Does Unity Editor restrict CPU usage in 2023?
Just asking because my game is clearly GPU bound (on my machine, ok CPU, weak GPU) and in Editor, in some situations GPU usage falls to 70% and CPU usage caps at 50% (in these situations), while in Build GPU is always around 100% no matter what (with +20% framerate).
Just wanne know so I can take action in case of optimizing for weak GPUs.

Btw, all CPU Cores are pretty much balanced with I assume clipping and other rendering setup (doesn't happen much else atm), which I appreciate very much.