Studio taking ages to open: stuck at "Loading translation memories view" for 20 mins +

Hi,

I haven't seen this problem before. Hope someone can help. The "translation memories view" in my Studio 2017 has been very slow of late. If I have to change to that view while translating, I can easily wait 10 minutes before the page appears. Annoyingly, this sometimes also happens at start-up. I waited 25 minutes today for Studio to open because it was stuck in "loading translation memories view" for ages. This only happens on my PC, not on my laptop.

Any ideas what is causing this?