Slow refresh due to linker File#getPreLinkedOutput

my problem is that I have a very long build time after saving changes in my code. The page refresh lasts for minutes some times. I already used METEOR_PROFILE=100 to identify the problem. Here is the output:

So, nearly all of the build time depends on linker File#getPreLinkedOutput (216,172 ms of 229,823 total).

Does anybody know how to fix this? Would appreciate anything that helps, thanks.