I have an issue with the Craft3, after a few requests and clicking around the whole site (front-end and CP Admin) seems to hand and lag. Also I get a popup message on Google Chrome mentioning that site is unresponsive followed by site in unreachable.
What could be the possible cause?
Here is my environment:
- Hosting: DigitalOcean
- OS: Ubuntu 16.04.1 LTS
- PHP: 7.0.33 with OPcache
- MySQL: Ver 14.14 Distrib 5.7.26
- Craft: 3 (Dev Environment, DevMode = true)
- Installation : a sub-directory of root directory, the root directory has another Yii2 application running too.