Apple Notes slow to update and lags when typing

Slow typing / typing lag only when working in Apple Notes. It was getting pretty frustrating as the lag could be significant at time. No other app on my Mac (or my iPhone or iPad) do I experience this lag. I once thought it might be caused by intermittent syncing to the Cloud, but offline I experienced the same results.

My recent conclusion via trial & error:  I have one really big Note that I use as a Daily Journal. In fact, I copied/pasted it to a Pages document and it's almost 51,000 words. Today, I pulled out the 2023 entries into its own note and the lag is greatly reduced, if not gone completely.

Consider the size of your note. Too many photos, tables, even simply too many characters/words may be increasing memory requirements. When I typed in the BIG Note just now, my CPU usage spiked at 70.2. In fact, just opening that BIG Note made my %CPU spike to 22.  However, when I opened a new Note and started typing it never really went over 8.0 (same for smaller one-page Notes).