Interesting. Yes, sometimes it's slow but really all that often. I just quit and come back later. I learned to clear all my pages. Too many open pages will slow downloads. Sometimes my answer disappears. Often, it's because my finger slipped to the "cancel" button or I slip off that page. A couole of times I went out of the site entirely. When I go onto another page, i get my answer back by once more clicking answer the question once I'm back to the question. (I only use my phone and am usually doing something else at the same time. Then my phone slips.) I've never had a blank screen.
Also, I'm not on the site everyday. In fact, i'm not even on the site every week. When I am on site, it's usually for a couple of hours; sometimes more. Maybe I'm just lucky? Maybe the mobile app works better?
I don't mind just leaving the site when I have difficulty. I am definitely a multitasker. There is always something else to do. In my younger years, I swear I could do "six" things at once. Now I can rarely do more than 2. lol