We have this issue on the Prestashop front office language,
It requires to increase suhosin.post.max_var and suhosin.request.max_var to a minimum of 1441.
In our case, I need my hosting provider to increase these values on the php.ini file.
This post is very useful to understand basic concepts about the PHP configuration.
Example of php.ini file with relevant performance parameters:
<?php
memory_limit = 2048M
max_execution_time = 1000;
max_input_time = -1;
post_max_size = 15M;
upload_max_filesize = 15M;
max_input_vars = 10000;
suhosin.get.max_vars = 10000;
suhosin.post.max_vars = 10000;
?>