It could be related to the update, but it may also just be too many entities loaded together at once.
How many planters do players usually have grouped in the same area on average? If there are a lot of them together, that could cause lag when someone looks at the auto farm.
Could you also test whether disabling these helps?
"Install Light": false,
"Install Heater": false,
"Install Sprinkler": false
If turning those off improves performance, then the lag is probably being caused by too many active entities/effects in one place.