  We report second-timescale infrared photometry of the nova V1674 Her using
Palomar Gattini-IR. These observations constitute the first infrared and
highest temporal resolution data (resolution of ~ 0.84 s) of the nova reported
to date. PGIR observed in this fast readout mode for more than an hour on three
nights between 3 and 6 days after discovery. We searched for periodic
variability using a Lomb-Scargle periodogram and did not detect anything down
to a three sigma upper limit of 0.093 mag. This suggests that the periodic
variability detected in the nova by Patterson et al. 2021 was lower by at least
a factor of about 1.65 in the first week of the eruption.
