Rendering Large No Of objects

Hi sir,
we created line using Buffer Geometry. Which has Rotate ,Scaling,Move ,Copy Functionlity. When we add More than 20000 Lines in scene and try to use functionalities (Like rotate). It got slow down . Our target is of around 1 Lakh Objects in a scene along with all the edit Functionalities (Like Rotate ,Copy) without getting Slow Down.Is there is any way to render Large No. of object without afffecting performance.

Thanks and Regards

Have you considered using geometry instancing?