Claude Code
Claude Code Performance Fix Guide
Diagnose and fix the slowdowns that make Claude Code feel sluggish on bigger projects.
Published April 2026
Look inside
The popular explanation that thinking content redaction caused shallower output is wrong. The real causes are two changes Anthropic shipped with no announcement: adaptive thinking, which lets Claude allocate zero thinking tokens on turns it deems simple, and a default effort level silently lowered from high to medium.
$19Checkout opening sooninstant download
Or get the whole library
This is one of 113 guides in the Vault. Get every guide plus every future one with lifetime access for $297, less than buying 16 on their own.
Get the Vault →
