Newer clients assume you want to stream video while downloading. To achieve this, they artificially throttle background data. Build 25534 has no streaming logic—it downloads at the maximum speed your line allows, 100% of the time.
: Users can manually tweak disk I/O settings to prevent "disk overloaded" errors during high-speed transfers. utorrent 221 build 25534
: Build 25534 is generally considered an "internal" or beta build that was never officially pushed to the public stable channel. The 2GB Memory Limit Newer clients assume you want to stream video