build.gradle(module:app)

android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "jp.hoge.anew"
        minSdkVersion 15
        targetSdkVersion 26
        resConfigs "ja", "xxhdpi"
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
        debug {
            ext.enableCrashlytics = false
        }
    }
    aaptOptions {
        cruncherEnabled false
    }
}

少し早くなった印象。