Confirming I had similar lag issues after Patch 3 (rubberbanding, can't dig, actions taking 5-10 seconds to fulfill) and am able to repro the same issues with the animal statues. When going back to the cave, they are semi rebuilt and make a "kachunk" sound and jitter every second. Lag affects other maps, including the Underdark which is very strange.

Loading before they are destroyed or stating a new save works fine, even with mods. Issue only happened after Patch 3. Unfortunately I destroyed the statues like 40 hours ago...

Hopefully Larian can hotfix this physics issue. Or maybe we can mod out the statues?