Performance: very long build times

I sometimes observe that the build gets stuck in the bnd tooling. This time it seems again to drill down to access to JAR files:

<img width="1179" alt="Screenshot 2022-09-23 at 10 16 15" src="https://user-images.githubusercontent.com/1410238/191919744-1140917b-268a-41bc-bfae-d969741b2e5e.png">
