Somes problems on my 2D space shooter game (Unity 5.5.0p4)

Hello everybody :)

For beginning, apologize me for my French-English.

It is about 1 year that I develop a simple game in 2d type space shooter. I easily can integrate features with my developer skills.

About 1 month ago, I migrated from version 5.5.0p2 of Unity to version 5.5.0p4 (mainly due to the bugs present for the SplashScreen).

Since this update and the addition of new features, I have observed 1 bug and 1 other reported by my friend :

• 1: the player can not move (fixed position) but the lasers launch well. This is handled by a players.controls class with the Screentoworldpoint notion.

  Me, i dont have this problems on my Galaxy S6. My friend have this problem on her Galaxy S6. Both phones have Android 6.0.1

• 2: during my build and my tests, I realize that the game starts to lagger when I arrive near level 2 (the application becomes slow and unplayable).

So I followed several issues advocating texture compressions, reviewing the Build Settings. Others talk about the profiler (I do not see where the data are interesting in this one).

The stats of my application during my developments are not excessive.

I will provide you with more detailed screens when I have access to my project.

Here are two links to test my app if you want (this will be more relevant to you).

Official application (without problem) & build with Unity 5.5.0p2 : https://play.google.com/store/apps/details?id=fr.franconysteven.galacticsoldier

Application in development (or both problems are present) & build with Unity 5.5.0p4. https://drive.google.com/file/d/0B8_Keo1OOB1KaTYweWxQS2RPcEE/view?usp=drivesdk

For me, it's a Unity issues problems or instantiate bullets. But i'm not sure..

In the meantime, I will check the variables and their initialization in the code as well as check the different settings (vsync, graphics quality, ..)

Thanks you for your response.