Data Binding inflation is very slow

I'm currently using DataBinding with a RecyclerView, and I'm getting pretty severe lag when a list first loads. However, after I scroll past a page and it stops creating new viewholders, everything is fine.

During creation, the only thing I'm doing is inflating a layout using DataBindingUtils, so I'm wondering if there are parts that can be improved.

Attached below are relevant code snippets. I'm currently using a library, FastAdapter, so the signatures will not match exactly

When creating a viewholder, I do the following:

override fun createView(ctx: Context, parent: ViewGroup?): View {
    val start = System.nanoTime()
    val binding: ViewDataBinding = DataBindingUtil.inflate(
        LayoutInflater.from(ctx),
        layoutRes, parent,
        false,
        null
    )
    L.d { "Create view ${(System.nanoTime() - start) / 1000000}" }
    return binding.root
}

It appears that for my more complex layout, viewholders take around 30-60 ms each, resulting in notable lag.

Binding and unbinding are like so:

final override fun bindView(holder: ViewHolder, payloads: MutableList<Any>) {
    super.bindView(holder, payloads)
    val binding = DataBindingUtil.getBinding<Binding>(holder.itemView) ?: return
    binding.bindView(holder, payloads)
    binding.executePendingBindings()
}

open fun Binding.bindView(holder: ViewHolder, payloads: MutableList<Any>) {
    setVariable(BR.model, data)
}

final override fun unbindView(holder: ViewHolder) {
    super.unbindView(holder)
    val binding = DataBindingUtil.getBinding<Binding>(holder.itemView) ?: return
    binding.unbindView(holder)
    binding.unbind()
}

open fun Binding.unbindView(holder: ViewHolder) {}

final override fun getViewHolder(v: View): ViewHolder = ViewHolder(v, layoutRes)

Basically, I usually have a single data model that I set, and I implement unbinding myself per viewholder. There doesn't seem to be a problem there.

Reading other articles, it appears that most developers have the same viewholder creation method as I do. Is DataUtilBinding not meant to be done upon creation, or is there something I'm missing?

As an addition, here is my relevant layout xml:

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools">

    <data>

        <variable
            name="model"
            type="github.fragment.ShortRepoRowItem" />
    </data>

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="?android:windowBackground"
        android:foreground="?selectableItemBackground"
        android:paddingStart="@dimen/kau_activity_horizontal_margin"
        android:paddingTop="@dimen/kau_padding_small"
        android:paddingEnd="@dimen/kau_activity_horizontal_margin"
        android:paddingBottom="@dimen/kau_padding_small"
        tools:context=".activity.MainActivity">

        <TextView
            android:id="@+id/repo_name"
            style="@style/TextAppearance.AppCompat.Medium"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:text="@{model.name}"
            android:textColor="?android:textColorPrimary"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            tools:text="@tools:sample/full_names" />

        <TextView
            android:id="@+id/repo_desc"
            style="@style/TextAppearance.AppCompat.Caption"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:ellipsize="end"
            android:maxLines="2"
            android:text="@{model.description}"
            android:textColor="?android:textColorSecondary"
            app:goneFlag="@{model.description}"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/repo_name"
            tools:text="@tools:sample/lorem/random" />

        <com.google.android.material.chip.Chip
            android:id="@+id/repo_stars"
            style="@style/RepoChips"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            app:chipIcon="@drawable/ic_star_border"
            app:compactNumberText="@{model.stargazers.totalCount}"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/repo_desc"
            app:layout_constraintWidth_percent="0.12"
            tools:text="123" />

        <com.google.android.material.chip.Chip
            android:id="@+id/repo_forks"
            style="@style/RepoChips"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            app:chipIcon="@drawable/ic_fork"
            app:compactNumberText="@{model.forkCount}"
            app:layout_constraintStart_toEndOf="@id/repo_stars"
            app:layout_constraintTop_toBottomOf="@id/repo_desc"
            app:layout_constraintWidth_percent="0.12"
            tools:text="123" />

        <com.google.android.material.chip.Chip
            android:id="@+id/repo_issues"
            style="@style/RepoChips"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            app:chipIcon="@drawable/ic_issues"
            app:compactNumberText="@{model.issues.totalCount}"
            app:layout_constraintStart_toEndOf="@id/repo_forks"
            app:layout_constraintTop_toBottomOf="@id/repo_desc"
            app:layout_constraintWidth_percent="0.12"
            tools:text="1.5k" />

        <com.google.android.material.chip.Chip
            android:id="@+id/repo_prs"
            style="@style/RepoChips"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            app:chipIcon="@drawable/ic_pull_requests"
            app:compactNumberText="@{model.pullRequests.totalCount}"
            app:layout_constraintStart_toEndOf="@id/repo_issues"
            app:layout_constraintTop_toBottomOf="@id/repo_desc"
            app:layout_constraintWidth_percent="0.12"
            tools:text="123" />

        <com.google.android.material.chip.Chip
            android:id="@+id/repo_language"
            style="@style/RepoChips"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:text="@{model.primaryLanguage.name}"
            app:chipIcon="@drawable/ic_language"
            app:languageColor="@{model.primaryLanguage.color}"
            app:layout_constraintEnd_toStartOf="@id/repo_date"
            app:layout_constraintStart_toEndOf="@id/repo_prs"
            app:layout_constraintTop_toBottomOf="@id/repo_desc"
            app:layout_constraintWidth_percent="0.25"
            tools:text="JavaScript" />

        <com.google.android.material.chip.Chip
            android:id="@+id/repo_date"
            style="@style/RepoChips"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            app:chipIcon="@drawable/ic_time"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toEndOf="@id/repo_language"
            app:layout_constraintTop_toBottomOf="@id/repo_desc"
            app:relativeDateText="@{model.pushedAt}"
            app:textStartPadding="4dp"
            tools:text="@tools:sample/date/mmddyy" />

    </androidx.constraintlayout.widget.ConstraintLayout>
</layout>

I've tried doing the same thing with two linear layouts instead of ConstraintLayout, but it doesn't seem to make much of a difference.

Code snapshot: https://github.com/AllanWang/GitDroid/tree/f802c991580d70470b422186fc43f46b9cfe2465