m4rtin,
Thank you for working with DevStyle and liking it. Sorry that you are seeing this problem.
1. Can you please check if you see the same problem with a new empty workspace as well? If yes, then please share the workspace log which is located at workspace dir/.metadata/.log to help us investigate further.
2. Can you please clarify approximately how much time does it stop once you select a workspace? If you could get 3-4 thread dumps during the period during which workspace does not response or is slow, that would help us figure out what process is running. To take a thread dump, you will need to run
jstack -l 9000 > dump1.txt
Please replace 9000 with the PID of the Eclipse process, the jstack program can be found in the bin directory of any JDK installation. If you can generate 3-4 dumps (sent to different files, of course) during the period of slowness, and attach those files here, that could help a great deal.
3. Please also share with us your OS and version details and OS theme details if any set.
Apologies for inconvenience caused. We hope to figure out the issue soon.
–Swapna
Genuitec Support