First of all thanks for support and time.
Here is the base material settings , parent material and then baked with parameters.
Concerning dof I try to use High quality mobile Gaussian blur and it works well but all materials used by particles with subUV images are blurred if background is blurred by DOF. If particle is emitted where background is closer and not affected by DOF post processing blur they are rendered ok and not blurred.
Ive tried already many options, such as render after dof and doesnt work also in settings I check Allow separate transluceny and doesn`t work.