Desktop PC with Debian Linux OS, Firefox as my browser. I.E., I am not playing via the mobile app normally. I did add the mobile app (Android) because fishing is a little less troublesome on mobile, but I still mostly play via browser. The mobile app does not seem to be affected by the same issues for me. Likewise, starting Firefox in "safe mode" (all extensions disabled) does not help.
I have noticed more often that lately, as another example, I can "Harvest All Crops", and it will first show the activity spinner, and then... It does nothing obvious for several seconds. If I wait a little longer, it will eventually show the activity spinner again and complete the action. On occasion, it will do it all very quickly without pause, but that is less common than the pause.
I also recently noticed that sometimes, when switching to my Farm sub-screen, it takes a few moments to even "activate" the "Harvest All" button (or he Plant All, or even let me click on a crop to see how long before it is ready).
I can try to see if I can make a video of one of my play sessions to show you, but that may take awhile as I do not have anything installed currently for doing so.