ActivityRepositoryEloquent.php

class ActivityRepositoryEloquent extends BaseRepository implements ActivityRepository
{
    // ...

    public function insertMany($records)
    {
        $searchFields = [
            'subdomain',
            'element_type',
            'element_id',
            'slug',
        ];

        foreach ($records as $record) {
            $record['deleted'] = false;

            $this->model->updateOrCreate(
                array_only($record, $searchFields),
                array_except($record, $searchFields)
            );
        }
    }
}

Current implementation of something like updateOrCreateMany. But it's very slow even with compound index, consisting of all $searchFields.