bug: inconsistent smooth texture animation

Steps to reproduce the bug: Set up 3 different prims with "smooth"-parameter texture sliding, rotation, and scaling. Create/delete some flex prims for comparison.

Observed results: Only texture scaling is smooth; the others are jerky (perhaps related to flex prims). Why? Particles are also smooth yet all of these effects are client-side (+ flex prims) yet only texture sliding/rotation are jerky.

Expected results: ALL smooth-parameter texture animation should be smooth.

Disabling flex prims and/or setting lighting detail to a non-"all local lights" setting fixes this. There are definitely issues with "all local lights" because they cause SL to pause every second or so when there are many flex prims around with lights too.