Windows Defender might be impacting your build performance

You need to exclude those directories in your Windows Security’s Exclusion list.

1. Type Windows Security in your windows Search bar
2. Click Virus & threat protection
3. Under Virus & threat protection settings header, click Manage Settings
4. Under Exclusions header, click Add or remove exclusions
5. Click Add an exclusion
6. Select type Folder
7. Enter the directory
8. You are done

Yes it is secure, necessary and really improves the performance as the real-time scanning is enabled in Windows defender by default.
Read this: Minimize the impact of antivirus software on build speed.