Solutions to stop speedrunning

Seriously, speed running ist the only thing i find to be interesting in this low level dungeon grinding.
Those dungeons require pretty much no skill anyway, so what should keep them interesting when not hunting my speed record?
If the party pulls only 3 mobs at once even though they are well overgeared, it is a waste of time and destroys the fun immediately for me.
For me the fun is playing your char at the limit of what is possible and not hang around doing slow pulls.
If there are new players in the dungeons (in terms of gear) i have no problem to introduce them to the dungeon, etc and maybe even to the possibilities of speeding the dungeon up. With the current speed that's possible to farm high level gear, they won't stay low for long anyway.