Problem

CPU Usage is high due to language_server_windows_x64 while working on a project in IntelliJ IDEA:

Solution

The language_server_windows_x64 process is not directly related to the IntelliJ IDEA platform, but third party plugins like Codeium: AI Autocompletion may use it under the hood

To verify whether it's a platform or a plugin issue, try to disable all custom plugins and restart the IDE: