Dissolve and frozen worked perfect now! <img src="{SMILIES_PATH}/icon_e_smile.gif" alt=":)" title="Smile">
The problems with Construct´s Effects must be the same of yours.
Awesome! The problem was actually with the random number system used by the default effects, which I also used thinking it is the best way. But it's not - first of all there's the problem we see of it not working on certain mobile GPUs, but also the results it produces aren't as random as could be.
So I started doing research and found this awesome blog post from a fine gentleman by the name of ajgryc: http://byteblacksmith.com/improvements- ... gl-es-2-0/ - where he nicely explains why the "standard" random system is bad and also provides a better one. One that I now use in all the shaders that have random bits.
I'll also ping Ashley here just in case he'd like to fix the default shaders, but he'll probably ask for the proper bug report which cannot be provided as it's device specific and so it'll probably fade away as usual. But just in case the reason and solution are right in the link above. If he'd like to help out those working for mobile it's as easy as implementing that code.