Dynamically Adding Products To Cart - Second/last product loses custom options

[TwoLoonSoftware]

I am dynamically adding products to the cart in Magento2 with some custom options. Every product has the same base product id with different options. RepresentProduct has been properly overridden so that all products added to the cart are separate. However with this code, the second product added will lose it's custom options:

$magento_product = $this->productRepository->get('simple-product-1');
$params = array(
    'product' => $magento_product->getId(),
    'qty'     => intval(5),
    'options' => array(
        'cr_price' => 12.0,
        'Product' => "Test P",
        'cr_XML' => '<root></root>'
    ),
);
$this->cart->addProduct($magento_product, $params);
$params = array(
    'product' => $magento_product->getId(),
    'qty'     => intval(10),
    'options' => array(
        'cr_price' => 14.0,
        'Product' => "Test P2",
        'cr_XML' => '<root></root>'
    ),
);
$this->cart->addProduct($magento_product, $params);
$this->cart->save();

Only the first product has an entry in the quote_item_option table.

Any thoughts on why or how to fix would be appreciated.

Magento 2.2.