[Bug] Opus 4.6 extended thinking causing excessive latency (20+ minutes)

Bug Description
it seems like Opus 4.6 is _way_ slower. It'll sit there saying "thinking" for up to 20 minutes at a time!

Environment Info

• Platform: linux
• Terminal: ghostty
• Version: 2.1.37
• Feedback ID: a91586e9-d05d-42e5-bba4-35d997148e5a

Errors

[{"error":"Error: LSP server plugin:rust-analyzer-lsp:rust-analyzer crashed with exit code 1\n    at <anonymous> (/$bunfs/root/claude:2080:21471)\n    at emit (node:events:98:22)\n    at #handleOnExit (node:child_process:520:14)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-07T21:53:53.479Z"},{"error":"Error: Request was aborted.\n    at RU$ (/$bunfs/root/claude:838:99151)\n    at next (native:1:11)\n    at jrD (/$bunfs/root/claude:5680:4399)\n    at next (native:1:11)\n    at yrD (/$bunfs/root/claude:5685:7547)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-07T22:50:04.445Z"},{"error":"Error\n    at MR (/$bunfs/root/claude:28:1144)\n    at <anonymous> (/$bunfs/root/claude:33:10093)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:861:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/claude:35:2149)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-07T23:09:31.044Z"},{"error":"Error\n    at MR (/$bunfs/root/claude:28:1144)\n    at <anonymous> (/$bunfs/root/claude:33:10093)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:861:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/claude:35:2149)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-07T23:09:46.370Z"},{"error":"Error\n    at MR (/$bunfs/root/claude:28:1144)\n    at <anonymous> (/$bunfs/root/claude:33:10093)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:861:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/claude:35:2149)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-07T23:09:51.462Z"},{"error":"Error\n    at MR (/$bunfs/root/claude:28:1144)\n    at <anonymous> (/$bunfs/root/claude:33:10093)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:861:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/claude:35:2149)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-07T23:16:27.187Z"},{"error":"Error\n    at <anonymous> (/$bunfs/root/claude:15:64399)\n    at <anonymous> (/$bunfs/root/claude:33:10259)\n    at emitError (node:events:43:23)\n    at <anonymous> (node:_http_client:253:22)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/claude:35:2149)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-07T23:19:14.408Z"},{"error":"Error: Web search error: unavailable\n    at f01 (/$bunfs/root/claude:2204:2541)\n    at call (/$bunfs/root/claude:2204:6811)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-08T00:05:35.973Z"},{"error":"Error: Web search error: unavailable\n    at f01 (/$bunfs/root/claude:2204:2541)\n    at call (/$bunfs/root/claude:2204:6811)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-08T00:05:36.619Z"},{"error":"Error: Web search error: unavailable\n    at f01 (/$bunfs/root/claude:2204:2541)\n    at call (/$bunfs/root/claude:2204:6811)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-08T00:05:40.522Z"},{"error":"Error: Web search error: unavailable\n    at f01 (/$bunfs/root/claude:2204:2541)\n    at call (/$bunfs/root/claude:2204:6811)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-08T00:05:40.621Z"},{"error":"Error: Web search error: unavailable\n    at f01 (/$bunfs/root/claude:2204:2541)\n    at call (/$bunfs/root/claude:2204:6811)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-08T00:05:43.133Z"},{"error":"Error\n    at MR (/$bunfs/root/claude:28:1144)\n    at <anonymous> (/$bunfs/root/claude:33:10093)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:861:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/claude:35:2149)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-08T00:05:45.376Z"},{"error":"Error\n    at MR (/$bunfs/root/claude:28:1144)\n    at <anonymous> (/$bunfs/root/claude:33:10093)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:861:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/claude:35:2149)\n    at process…

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