The MacOS version users may experience an abnormally slow response time when using Talend Data Preparation Free Desktop.
This is due to the App Nap feature which slows down background or inactive applications to save your computer's battery. And because Talend Data Preparation Free Desktop is now a headless application, it can sometimes be considered inactive by App Nap.
The following symptoms show that you may be experiencing this issue:
The quick solution to this problem is to click the Talend Data Preparation Free Desktop icon in the dock. The application's performances will go back to normal, but only temporarily.
The permanent fix to this issue is to disable App Nap for Talend Data Preparation Free Desktop. To disable App Nap, proceed as follows:
defaults write org.talend.dataprep NSAppSleepDisabled -bool YES
You have to completely restart the application, not just close and reopen your Web browser.