in truth, all aircraft have issues with heat and density altitude.
but as Toks replied, just sit back and enjoy the ride! all the
commerical aircraft have W&B tables for the DA. If you've ever
flown in/out of a southwest US airport in the summer (Arizona,
Nevada, California, New Mexico are most notorious) you may wonder
why the aircraft is not full. Not full of people (which you can
easily see) and not full of cargo (which you'll probably never see
unless you watch the loading).

W&B for the heat.

Once, a few years ago, a 737 (I think) was getting ready to take off
from Phoenix, AZ in the summer. Air temp was over 100 and the temp
on the runway was well over 130. And the tables the dispatcher had
(from Boeing) did not go that high!. Call to Seattle to talk to
the engineers. Don't remember if they took more cargo off or if
they postponed the flight.

Sit back and enjoy the ride!