Large Number Of Individual Writes
This warning is raised when the profiler detects that you are writing a lot of data to the database. Similar to the warning about too many calls to the database, the main issue here is the number of remote calls and the time they take.
Unlike the more common Select N+1, the issue with this alert isn't with the number of selects, but with the number of write statements (delete, create, update) that are being sent to the database. There is no one single solution to this problem, but a common approach is to change the write behavior from directly using the Entity Framework to a batch or a bulk approach, such as performing the changes in a stored procedure in the database itself.