looks like the latest build incorporates a 1/1000 time change, but I'm still having "stuttering" when anyone joins/leaves/dies/dc's. Sucks since I love Pitbull.
What type of CPU use you?
I guildmate uses an 3 GHz Quad-Core Intel and was virtually "freeze free" after the 1/300 change. I'm using an 2.4 GHz Dual-Core and get rid of the problem around 1/600 - 1/900.
Maybe, LibDogTag-3.0 is too CPU-hungry and you can't eliminate the freezes on slower system.