It seems like Eclipse, Spring Source Tool Suits (STS) or any other IDE built on top of Eclipse fail to load properly (frozen, slow, 100% CPU, etc) on Ubuntu 16.04.
You are not alone... GTK compatibility issues.
You will need to start Eclipse with GTK 2, just edit the eclipse.ini file and add the following:
--launcher.GTK_version
2
You are not alone... GTK compatibility issues.
You will need to start Eclipse with GTK 2, just edit the eclipse.ini file and add the following:
--launcher.GTK_version
2
before the --launcher.appendVmargs line