Problems:
It wasn’t slow until last night. However, after I moved in today morning, I reconnected my computer and turned on Unreal Engine, and it started lagging from the project browser(Reaction is so slow). Even after running the project, the lag became very bad even if the new project.
What I did:
Download Unreal Engine Launcher
Download anothrer Unreal Engine Ver. ( I did 5.1.1 and 5.2.1 )
Make another new project
NVIDIA update new Ver.
I saw “Turn Off the realtek Audio Driver” in this Forum but it is not downloaded on my computer.
Please assure that Unreal Engine 5 is using your GPU. A recent Windows update seems to strangely put some things on onboard graphics that need the GPU and then other things like voice chat software will strangely default to use the GPU when it’s completely unnecessary.
You can do this through your Nvidia GeForce Experience app, or in the windows settings app
Thank you for leaving an answer to my question. I’m not sure if my understanding is correct. I monitored GPU usage in task manager.
I checked that it was usually maintained at 50% and reached 100% at the highest level.
Is the way I checked correct?
The question is not “is it using the GPU;” the question is “which GPU is it using?”
The Ryzen 7700X has an integrated RDNA GPU that is slower than the RTX 3060.
It’s quite likely your editor is now using that GPU, instead of the built-in one.
Typically, systems come with some control panel to let you switch which of the GPUs (built-in/RDNA, or discrete/RTX) to use. Find that control panel, and make sure Unreal Editor is selected to use the discrete GPU.
I understand what you mean. And I succeeded. I feel so really good
But I’m not sure if my method is a good one. I tried to change the settings in the NVIDIA control panel and apply it, but it didn’t work. (Maybe it’s because my method is wrong.) So I went into the display adapter in Device Manager and checked which GPU I had. And I have “Microsoft Basic Display Adapter” and “RTX3060” so I disabled the “Microsoft Basic Display Adapter” device. Then the Unreal engine worked fine. Wouldn’t there be a problem later if we use this method? Thank you for leaving an answer to my question and understanding me
Thank you for the detailed explanation.
The “Microsoft Basic Display Adapter” did not cause any lag even after using it again.I’ve only been studying Unreal Engine for a little while, so I’m sure you’ve been frustrated by my lack of knowledge. Thank you again to everyone who helped.
Thank you for leaving an answer to my question and understanding me 
