claude-code - 💡(How to fix) Fix [Bug] Performance degradation in no-flicker mode during long-running bash processes [1 participants]

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anthropics/claude-code#45162Fetched 2026-04-09 08:11:51
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Bug Description No flicker mode performance massively reduced when bash cargo build is running

Environment Info

  • Platform: win32
  • Terminal: windows-terminal
  • Version: 2.1.96
  • Feedback ID: 699320c2-ad76-458d-812d-870dca435c64

Errors [conversation transcript redacted due to confidentiality]

extent analysis

TL;DR

The performance issue with flicker mode when running bash cargo build may be related to resource-intensive processes interfering with the terminal's rendering.

Guidance

  • Investigate if other resource-intensive processes are running concurrently with bash cargo build and causing the performance degradation.
  • Try running bash cargo build in a separate terminal or command prompt to isolate the issue and see if the performance improves.
  • Check if there are any known issues or limitations with Windows Terminal version 2.1.96 that could be contributing to the problem.

Notes

The exact cause of the issue is unclear due to the redacted conversation transcript, so further investigation is needed to determine the root cause.

Recommendation

Apply workaround: Run bash cargo build in a separate terminal or command prompt to isolate the issue and potentially improve performance. This is a safe and non-intrusive step that can help mitigate the issue while further investigation is conducted.

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