Thanks for the reply, I avoided the bloom for this reason. I have attached the behaviour and turned on a couple of things as suggested. I also tried it without lighting to be sure, no sign of detection. I am talking about the 3D of course.
Thank you so much, It works now, and thank you for the 1.0.0 update also. In the next days I will try to set it to achieve the hoped result, I see it works better in higher resolutions but I'll try different things :) Thanks again.
I updated the extension on to 1.0.0. Now it uses the base gdevelop's api for post processing so the default Post processing effects now work. There was a few errors i personally encountered, however they should now be patched. If you upgrade to 1.0.0, tell me if you every encounter any errors.
