The lens flickers during startup

Hi all. I ran into a problem. When creating an effect with a custom location, the lens starts to flicker when launched into snapchat. This is really very annoying and I really want to get rid of it. My device is iPhone 12pro, I also tested it on another device and there is the same problem. Please help if anyone knows how to fix this.

Hi @Solar_Wind
Could you provide more info about the case? What version of Studio, version of app?
Also, in that case is better to report issue to Snap