NextJS getServerSideProps with MongoDB is so slow it makes Vercel timeout

Question

Using getServerSideProps within my NextJS + MongoDB app makes it timeout when deployed. Loading times and server responses are incredibly slow as well.

I'm using them like this:

    const clientPromise = await getClient()

    const posts = await clientPromise
        .db(process.env.NEXT_PUBLIC_DATABASE_LABEL)
        .collection("articles")
        .find({"type": "nouvelle"},
            {projection: { "_id": 0, "title": 1, "titleSlug": 1, "type": 1, "imageUrl": 1, "author": 1 }})
        .sort({ $natural: -1 })
        .limit(2)
        .toArray()

    await clientPromise.close()

    return { props: {...{posts}} }

Dependencies:

    "mongodb": "^4.8.0",
    "next": "^13.2.1",

Is something wrong, or is there any way to optimize it?