I was just about to ask this question, good that I searched for it first. Understand now that this is not possible either. Encountered too many of those now.
Construct is an awesome piece of software but too many things you can't do in it drags it down a bit unfortunately.
I'm not sure what you mean by Construct2 can't do it?
There's at least two options: animation frames or webgl effects..
Depending on the platform you want to export to you'd have to choose the right one..