In T68212#1606695, @Ciencia_Al_Poder wrote:

I'm wondering what kind of "selective editing" do you expect to perform on a 39K list

In T41510#454573, @bzimport wrote:

ab.zachaeus wrote:

I've been whittling my Commons watchlist down (originally +39K, list emptying tool failed, see #66212). I broke 36K items and raw editing works fine now. Normal edit still fails and gives 504.

Would like to mention that somewhere between 33,5K and 35K entries, Special:EditWatchlist began to load and work, if very slowly. Selecting more than 10-20 entries causes increasing lag.

@RP88, how expansive is your watchlist? Mine is currently 33K (much smaller than previously due to watchlist tech issues) and I think the load time was around 5-10 secs with cat changes on.

Confirming that I didn't notice the Wikidata watchlist integration until category watching was undeployed.

In T9148#1556993, @Yellowcard wrote:

(......) I think it would be reasonable to group these entries to one saying something like 30 new files/pages were added to category XY.

Again, thanks for this new feature, I think it improves the category system a lot!

It probably works great for wikipedias but over at Commons we really need some additional features. Users are freaking out since their watch list feeds just exploded and not everyone thinks to check for the new filter/opt-in in the prefs rather than the watch list page options.