you guys all suck on comic scans interpretations and facts of the gem. let an expert tell ya. i got 30 yrs of stored knowledge and comics of the warlock and infinity various series.
runner arrived to his destination by teleporting to his destination from time to time whether it was by folding space or just popping in, he wasnt aware when he was doing.
the space gem didnt make him faster in the fight with thanos b/c he wasnt phasing in and out but actually running and stopping to screw with thanos.
either way the gem leaves a very noticeable effect when used.
now for pip, yes, he has used the gem for more then just teleporting but actually folding space around him to make him appeared phased.. he did it when he fought some dictators henchmen when they went to rescue Firelord's soul..
having said that Thor omni blast him and beats him senseless