Slow actions on Projeqtor

Hi,

Since P 7.4.3, i had problems of creation of activities on P. They are way to long. I saw it was an knowed issue and i updated to 7.4.4. It's much better but i still have problem like this :
- Impossible to change the ordre of projects on global planning
- some activities cannot be delete

The loader keep turning and nothing happen.
I see this on logs :

[Thu May 23 08:58:10.353605 2019] [:error] [pid 12540] [client 55.77.122.15:63477] PHP Fatal error: Maximum execution time of 160 seconds exceeded in /var/www/html/projeqtor/model/persistence/Sql.php on line 92, referer: l113301siepqtor.fr/view/main.php

At first sight, i t seems that the server is not enough performant. It is not true : 2 vCPU, 4 Go RAM.

Is it possible to elevate the level of debug somewhere to have more information on the problem and where to search ?

Thank you

Migration from php5.4 to php7.2 + upgrade to Projeqtor 8.0.4 have done the job.