We have recently upgraded from Odoo 12 to Odoo 15, both community versions, and are now experiencing performance issues on your AWS EC2 server. 

The server has 2 cores cpu and 4GB of RAM and we are using Apache2 as a reverse proxy. With around 9-10 concurrent users, you are seeing maximum CPU utilization of 25-30% during peak hours and 1.8GB of RAM usage.


 Enabling workers results in console JavaScript errors due to missing dependencies, but without workers, the site loads slowly. 

Can you advise on how to resolve this performance bottleneck?