### Steps to reproduce Begin of the insertion


End of the insertion Begin of the deletion

_Please write down the steps to reproduce. Try to write down all necessary preconditions (what permissions do you have, are other users involved?). Example:_

End of the deletion 1. On a PC with 8gb RAM open a project with more than 100 workpackages (the more the better. Firfox is worse, but also edge and chrome was tested)

2. Go into the Gantt-Chart Module

3. Experience loading time

4. Choose a pagination of >=100 work packages


### What is the buggy behavior?

1. loading time up to a minute / sometimes freezes application


### What is the expected behavior?

1. Loading time should be within a usable limit


### Begin of the deletion

### Screenshots and other files

_If you have screenshots of the application's bug behavior or other relevant files, please drag them into this place or attach them using the "Files" section._

###End of the deletion Environment information

_17.8.0_

**OpenProject installation type**

* [x] Begin of the insertionOn-Premise

End of the insertion Begin of the deletion On-Premise<br>


End of the deletion **OpenProject version**

_17.8.0_

**Browser**

* [x] Chrome
* [x] Firefox
* [x] Safari

**Operating System**

* [x] Windows

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