3 ms·
perf is all about making loading fast, scrolling & animations smooth, and interactions responsive. The classic RAIL model captures the scope of perf well. per
by paulirish 5y ago
perf is all about making loading fast, scrolling & animations smooth, and interactions responsive. The classic RAIL model captures the scope of perf well. perf and speed are synonyms.
CLS is a bit of a loner as there really aren't other metrics these days that also capture non-perf signals. But again, this distinction of CLS as a non-perf metric is for webperf nerds only, IMO.