Frontend editor Slow or doesn't work

Hi,
The Frontend editor is either extremely slow or just doesn't work. Even being slow is not acceptable. I have searched the forum and many people have raised this issue, but the support department's response has not been serious. For example:

1. Spend many hours and lot of money and go to another hosting.
2. Downgrade to MySQL 5.
3. Increase the max_execution_time to 300 seconds. Really? No script should take 5 minutes to start (may be in the 1950's)

Could someone in the support department please take this issue seriously and test on your hosting and provide us with real solution or fixes?

BTW, I have also seen your Documenation:
https://www.joomshaper.com/documentation/joomla-templates/travus/technical-requirements

We are using:
Joomla: Joomla! 3.9.24
SPPB: Version: 3.7.9
max_execution_time: 60 (waay too much)
memory_limit: 256M
upload_max_filesize: 32M
Server version: 10.2.36-MariaDB - MariaDB Server

Thank you