[BUG] Very slow keyboard and processing after coming from window sleep mode

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

When I have a Claude window open, put Windows into hibernate, and then start Windows again, keyboard input becomes very slow and delayed. Processing is also extremely slow, meaning token sending is extremely slow. I can literally watch individual tokens being counted up. Normally, all of this is much faster.

The issue does not go away if I continue to work with Claude. However, if I close the Claude window and open a new one it, everything works normal again.

I would like to continue working with my conversation from before Hibernate. Currently, I cannot do that because the delays make it completely unusable.

What Should Happen?

The Claude should be as fast as before hibernation, when Windows comes out of hibernation.

Error Messages/Logs

Steps to Reproduce

I have a msi Intel Ultra 9 285HX, 64 GB RAM with an NVidia RTX 5080. On/Off Button takes it to Hybernate.

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.158

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_