Super slow launch and imports from browser extension


I have recently installed JabRef, and I love the GUI and usability so far.

But it takes anywhere from 30 sec to a couple of minutes to launch the program, even though I have no librrary file or a small one with less than 10 entries. Opening preferences and the likes seems to take a weirdly long amount of time too.

Same with importing from a website with the extension, it takes 30 sec before I get the import window. Anyone got a clue, or is this normal?