(My english is bad sorry)

Hi everybody

I have my website on Odoo 9, the traffic daily is about 40 people + 10 internal users (I have many modules, sales, accounting etc etc)

I have one server on Digital Ocean, the setup is

Hardware: Ubuntu 14. 8 gb Ram 4 CPU 5 TB Transfer

Config:

Ngnix

I have postgres optimized

I have enabled the swap memory

I have optimized the website images, javascript, html, sql, etc.

Sometimes the server is very slow but I don't know what is the real problem, What is the correct config to support all the users, thanks for your suggestions