[Bug]: The WindowServer GPU usage is very high, causing the computer to lag severely.

### Before Reporting

- [x] I have checked FAQ, and there is no solution to my issue
- [x] I have searched the existing issues, and there is no existing issue for my issue

### What happened?

When using CopilotForXCode, the GPU usage is very high, ranging from 90% to 100%, which causes the computer to become extremely laggy. In contrast, when using Baidu’s ComateForXCode, the GPU usage is less than 50%.
My computer is a MacBook Air with an M2 chip and 16GB of memory.

### How to reproduce the bug.

It just happened!

### Relevant log output

```shell

```

### macOS version

26.1

### Xcode version

26.2.0

### Copilot for Xcode version

0.37.3