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Poor rendering performance #2625

@hmorneau

Description

@hmorneau

Describe the bug

I have a problem of poor rendering performance that been around for a while. The problem worsen as the conversation grow in length up to the point where it can hang for 30-45 seconds. Clearing the conversation always fix it. When the terminal hang, it's impossible to type, Ctlr-C to close the program also doesn't work.

What I find puzzling, is that sometimes the conversation can go on for 3 compressions cycle and stay fast and other time not longer after starting it start to hang.

Affected version

GitHub Copilot CLI 1.0.22.

Steps to reproduce the behavior

  1. Start a conversation let it go for a while
  2. The slowdown start after multiple back and forth and tools calls.

Expected behavior

Should stay fast.

Additional context

  • M1 Max 32GB
  • Happens in all terminal (VS Code, Ghostty, Terminal)

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