Yes, see default size. You can set it in the options document after the pipeline array.

my $all_collect = $collect->aggregate([
    {'$group' => {
        '_id' => {_path => '$path' , _ip => '$IP', _time => '$TIME'},
        '_count' => { '$sum' => 1},
        '_docs' => { '$push' => '$_id' }
     }    
    },
    { '$match' => {
        '_count' => { '$gt' => 1}
    }}
],
{ 
  'cursor' => { 'batchSize' =>  10000 }
} );
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