Wow! Congrats! The 5min fastest pace group. In your group there's also Jasmine Goh, Rachel See, Mads Louring, etc. You have done well.
All these runners can easily do sub 5 pace for their runs. So doing 5 min pacers definitely not a problem for these runners.
Usually there are a few runners in a pacing group. Not unusual to see pacers drop off the group for a variety of reasons eg not feeling well, ran into wall etc. So even if Yu have to drop off the pace, still have other pacers. Don’t think other runners will laugh at you lah. Anyway I’m sure the other members of the pace group will also remind each other to be consistent pace.
Nowadays the pacing quite consistent. I recall I used to complain the pacers always start too fast.