Thanks for the try, I should have a plugin that interfere with both but I did not find what
For the moment I disabled the mirror plugin and I'll check further
Thanks for the help
Viewing post in [CGMZ] Light Effects for RPG Maker MZ comments
Ok, sorry I could not help much, but I need to reproduce the problem first before I can investigate what is happening. You could try some kind of preloader for your water layer graphic or whatever it is that blinks. It could just be that the plugin is struggling to load it in time when it also has to load mirror sprite + light sprites, I am not sure.