php – WordPress very slow after increasing memory_limit

I am running the newest version of WordPress on Ubuntu 18.06 with php7.3-fpm and nginx.

I ran fast and well, but today I needed to increase the max_upload_size to 32M, that was the point where the problems started.

Before loading in less than 2 seconds, it is now loaded for more than 30 seconds.

Now there are errors in the nginx or php records.

regards