2.2.1 -> 3.0 release-> 3.1 alpha WIndows x64. The reported problem(80% of 8G is consumed) is a rare situation, but I think it strange to use about 800MB memory. I set disk cache to 256MB, not disable the windows caching of reads&writes. The size of all torrents is 280MB or so , with a lot of rss feeds and labels. So it is not strange if utorrent takes about 300MB to 600MB. But I have no idea why the rest of the memory is gone occasionally? BTW, is it possible to stop uttorrent reading all torrents when it starts? Besides, if the default value of gui.update_rate is 1000, the client is unable to use. I manually set it to 15s to make it respond a bit faster.