Creating a 2D jelly effect without physics

Hi there. So for the past few days i've been attempting to create a game object with blob/jelly like behavior. The method i've been using up till now consisted of creating a custom 2D mesh and connecting each of its vertices to its adjacent vertex and the centre of the shape using joints. This has worked fine for me until i realized that the game im working on requires that game object to be spawned a lot of times in one scene. Spawning too many of these objects slow down unity to a halt (eventually crashing it) and I imagine its mostly got to do with all the physics simulations it must be doing at once. So my question is if its possible optimize unity physics at all and if not is there a way to create a jelly effect using some other means like shaders and if so how would one go about doing that. Thanks.