Find and fix performance issues in your Metal games

A Podkey summary of Find and fix performance issues in your Metal games, from WWDC 2026.Today’s story is really about a gap developers have lived with for a while: you can see performance problems while you’re playing, but figuring out exactly why they happened later has been the hard part. Apple’s newer Metal tools are trying to close that gap with long-running trace capture, a command line workflow, and a way to label what was happening in the game when performance changed. And once that context shows up in traces, in Instruments, and even in MetricKit from real player devices, performance debugging starts looking a lot less like guesswork.The HUD is useful, but fleetingLook-back tracing changes the workflowThe command line gets very straightforwardWhy context matters as much as metricsTurning vague dips into specific answersInstruments makes the timeline readableA couple of rules so the signal stays cleanPost-launch monitoring gets more useful tooContinuous collection makes long sessions practicalWhat the testing cycle looks like nowThis podcast was created with Podkey. Make your own at https://podkey.fm