Inexplicit 'task' in Chrome Perfomance DevTools
You can use JavaScript's performance observer to know the bottleneck of perf issues in your web app.
Precise code -
const observer = new PerformanceObserver((list) => {
console.log('Long Task detected! 🚩️');
const entries = list.getEntries();
console.log(entries);
});
observer.observe({entryTypes: ['longtask']});
More details here