Hey @Warlaumont,
I see that you’re using X 8.1.1. In the first instance, can you update to 8.1.2 as this includes some performance enhancements.
Beyond that, please follow the troubleshooting steps for the following sections in this article:
- Child Theme
- CSS/JS Customization
- Increasing PHP Memory Limit
- Disabling Cache
If after thoroughly working through those you are still having issues, then please provide us with the following credentials in a secure note:
- Login URL
- Username
- Password
You can create a secure note by clicking on the key icon beneath your post. When doing so, please confirm that you are happy for us to make changes in your installation.
All being well, following the steps I outlined above will resolve your issue.