[Bug][Urgent] Claude Code API responses extremely slow with Claude 4.6 Sonnet/Opus (5+ minute latency)

Bug Description
Summary: Claude code is very very slow(practically unusable).
Another problem that comes with this is that when I launch claude from the terminal, there is a chance that it will take several minutes to open.

Detail: Since upgrading to Claude Max, Claude Code has become so slow that it’s practically unusable. For a simple prompt, there is a 20% probability, the API takes about 5 minutes to respond. I’ve also noticed that this is a hit-or-miss issue—it either responds very quickly or extremely slowly, with no middle ground(such as a 20–200-second response time.) This creates a problem: in the context of a complex task involving numerous API requests, if even one request gets stuck, my task cannot proceed. This means I can hardly get Claude Code to perform any tasks at all.

Environment Info

• Platform: darwin
• Terminal: tmux
• Version: 2.1.76
• Feedback ID: 24f29bc7-b6a1-44cf-bd2a-4ca8b4c3c586

Errors

[{"error":"Error\n    at QI (/$bunfs/root/src/entrypoints/cli.js:74:1144)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:79:10005)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:861:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/src/entrypoints/cli.js:81:2149)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-15T11:56:20.412Z"},{"error":"Error\n    at QI (/$bunfs/root/src/entrypoints/cli.js:74:1144)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:79:10005)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:861:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/src/entrypoints/cli.js:81:2149)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-15T12:03:01.109Z"}]

For example:
The first four "hello" requests returned at normal speed, but the last "hello" request took more than 5 minutes to return.
<img width="1544" height="1642" alt="Image" src="https://github.com/user-attachments/assets/555253a7-1626-4a87-a6e8-030af62b2066" />