Some days or times are better than others. Try closing LW & re-opening. Perhaps it may improve things. I have also noticed something similar, except if one technique doesn't work then I change my approach. Be that a different type of search or varying the search criteria, etc. Browsing host can sometimes find more sources or improve speeds. Your downld speeds are only as good as the sources are offering. Persistence often pays as the sources may be sharing bandwidth to many others, but as they finish you might get a bigger slice of the pie 'perhaps'.