The Runic Games Forums have details on another new patch for Torchlight 2, which they tentatively plan on releasing around midday today. In addition to gameplay tweaks and bug fixes, this should also offer this performance improvement under certain circumstances: "LARGE performance optimization to buff/debuff bar displays when there are a large number of overlapping, nonexclusive effects (damage over time, and duration based effects or knockback )." Thanks Shok.