For some reason, the IDEA frozen my NUC.
I guess the memory is the main issue. With only 2GB of swap and 16GB of RAM, I opened 42 chrome tabs and 2 IDEA, and one is trying to load a spring boot project.
I was planning to upgrade to 2x32. But this month I have already spent too much. For now I'll just order one and stay with 32+8.