Thanks @Silverforce for your reply. My options are be to buy C2 license (I know I can do game myself with C2, and it's cheaper
) or hire a professional (e.g. Unity guy). For me, the most important thing is the end result. It must be perfect. Because I use my money and my time for this. I don't want put a micro-stutters warning in the app description.
I have considered the options for a long time. The only thing that bothers me anymore, is the micro-stutters...
I hope this problem can be corrected by Scirra-team.