[Bug] Claude Code Performance Degradation: Significant Drop in Output Quality

Bug Description
geuily cocered with claude performace it weet from 7/10 to ow 1/10..

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.1.5
• Feedback ID: 38abfb1e-7d87-451a-a7cc-b66513dc11f6

Errors

[{"error":"Error: LSP server plugin:rust-analyzer-lsp:rust-analyzer crashed with exit code 1\n    at ChildProcess.<anonymous> (file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2140:21508)\n    at ChildProcess.emit (node:events:518:28)\n    at ChildProcess.emit (node:domain:489:12)\n    at ChildProcess._handle.onexit (node:internal/child_process:293:12)","timestamp":"2026-01-12T20:21:07.012Z"},{"error":"AxiosError: Request failed with status code 401\n    at Py (file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:56:1138)\n    at IncomingMessage.<anonymous> (file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:57:9861)\n    at IncomingMessage.emit (node:events:530:35)\n    at IncomingMessage.emit (node:domain:489:12)\n    at endReadableNT (node:internal/streams/readable:1698:12)\n    at process.processTicksAndRejections (node:internal/process/task_queues:90:21)\n    at e$A.request (file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:59:2132)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async ca5 (file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2863:8550)\n    at async file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:2863:9468","timestamp":"2026-01-12T23:17:02.135Z"},{"error":"MaxFileReadTokenExceededError: File content (86948 tokens) exceeds maximum allowed tokens (25000). Please use offset and limit parameters to read specific portions of the file, or use the GrepTool to search for specific content.\n    at TeB (file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1664:13298)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async Object.call (file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1673:996)\n    at async file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:3160:1513","timestamp":"2026-01-13T00:05:26.262Z"},{"error":"MaxFileReadTokenExceededError: File content (85271 tokens) exceeds maximum allowed tokens (25000). Please use offset and limit parameters to read specific portions of the file, or use the GrepTool to search for specific content.\n    at TeB (file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1664:13298)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async Object.call (file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1673:996)\n    at async file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:3160:1513","timestamp":"2026-01-13T00:13:13.321Z"},{"error":"MaxFileReadTokenExceededError: File content (85271 tokens) exceeds maximum allowed tokens (25000). Please use offset and limit parameters to read specific portions of the file, or use the GrepTool to search for specific content.\n    at TeB (file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1664:13298)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async Object.call (file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1673:996)\n    at async file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:3160:1513","timestamp":"2026-01-13T00:25:22.761Z"},{"error":"MaxFileReadTokenExceededError: File content (85271 tokens) exceeds maximum allowed tokens (25000). Please use offset and limit parameters to read specific portions of the file, or use the GrepTool to search for specific content.\n    at TeB (file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1664:13298)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n    at async Object.call (file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1673:996)\n    at async file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:3160:1513","timestamp":"2026-01-13T00:48:39.085Z"},{"error":"Error: Request was aborted.\n    at QBA._createMessage (file:///Users/abekhadra/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:496:3157)\n    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)","timestamp":"2026-01-13T00:50:53.685Z"},{"error":"Error: Requ

Note: Error logs were truncated.