Sometimes I get some in BG, but for me at least its no comparison to Cyro. Cyrodill is a savage wasteland of subpar coding and seizure inducing frame studdering. On weekend nights (if I have the mental fortitude to bother) I take a fist-full of carbamazepine before I go in.
Somehow bg started to be affected by lag since Clockwork patch, for some unknown reason.
And again somehow lags from cyro is carried to bg. Means if you q while in lagging vivec - when port to bg it will lag as much.