I’ve seen points with iCloud sync trigger this. I can also’t reproduce it, notes is as quick on difficult objects because it was for the previous a number of years after this fall’s OS updates.
My hunch is it’s extra of a normal concern than the notes app needing to be optimized, however let’s attempt to isolate the difficulty for you and anybody else on this state of affairs.
First put the gadgets that sync notes in airplane mode after which restart with all of them, let then begin up not related to the web.
Open notes app and repeat your efficiency take a look at on the Mac, ideally with zero apps beginning on reboot and instantly after you will have the difficulty, open exercise monitor, choose notes app and run sysdiagnose so you possibly can report the particular, reproducible concern to engineering for help in both an iCloud sync concern or a notes database concern.
Notes database concern, straightforward for them to assist when you possibly can reproduce it in airplane mode on the Mac.
iCloud sync, they’ve profiles to load and uncover what precisely is damaged with enhanced logging.
Both approach, you will have a efficiency concern that they will resolve this for you (with some reasonable effort gathering logs and troubleshooting) and maybe repair an edge case for everybody.
Sorry to place extra work on you, however this one goes to be solvable in my expertise with a bit extra troubleshooting.
Begin with the Mac, because it’s most accessible for diagnostics and fixing the difficulty with assist from assist if wanted, then you are able to do related adjustments on the opposite gadgets if wanted.
