Trouble with Villagers, Iron Golem and Set of Villagers.

Some villagers float out of bed. Iron Golem sometimes remains static and cannot be hit. Also, in areas with many villagers I find some Lag and there is loss of FPS. Will the particle option that was in the previous version return?

In the image you can see the Golem but being obviously static, the movement is not captured. But I swear he didn't move or could hit him.