Event Loop performance different in different version

[pandaCure]

• Node.js Version: v15.7.0 & v10.18.1
• OS: mac
• Scope (install, code, runtime, meta, other?):
• Module (and version) (if relevant):

setTimeout(() => {
  console.log(1);
  Promise.resolve().then(() => {
    console.log(2);
  });
}, 100);
setTimeout(() => {
  console.log(3);
  Promise.resolve().then(() => {
    console.log(4);
  });
}, 100);
// version v10.18.1 1 3 2 4
// version v15.7.0 1 2 3 4

[Ayase-252]

Execution order between timer queue, next-tickers and microtask queue was changed in Node.js v11

Refs: nodejs/node#22842

[gireeshpunathil]

closing as answered, pls reopen if there is anything outstanding.