title: Is it possible to set custom CPU throttling in Chrome DevTools?
body: <p>I am using Google Chrome 63.</p>
  
  <p>In DevTools in <strong>Performance</strong> tab there are three CPU throttling settings: "No throttling", "4x slowdown" and "6x slowdown".</p>
  
  <p>Is it possible to set custom throttling, for example "20x slowdown"? It could be via setting some flag in <strong>chrome.exe</strong> file or programmatically via NodeJS library.</p>
  
  <p>I found that Lighthouse library has kind of <a href="https://npmdoc.github.io/node-npmdoc-lighthouse/build/apidoc.html#apidoc.element.lighthouse.emulation.enableCPUThrottling" rel="noreferrer">helpful function</a> but if I change the default value inside it (<strong>CPU_THROTTLE_METRICS</strong> seems to be equal to 4) from 4 to (for example) 20 and run it, how can I be sure it really is 20x slowed down?</p>
  
  <p>Also, I would like to know, if it is possible to do such simulated "slow down" to the GPU in similar way?</p>
  
  <p>Thanks for any advice.</p>