thx for your post!
Yes u r right, I have lag issues also.
I am running SL on a high end pc with top performance, and everything set in ULTRA MODUS on a 24" LCD screen 1980x1200 resolution. Normally I never experience lag, but since last week it is running very unstable and increasing badly. Some of my friends have the same problems. Tried also the different viewers; emeral, hippo, normal sl viewer and the release, but it lags in all 4.
hope this answer helps u forward