\caption{\textbf{Cross-task gains depend on the task and evaluation delay.}
Mixed-latency training on Demon Attack yields higher delayed returns on
Atlantis and AirRaid, while Asterix has lower return at four frames than with
zero-latency training. Gray and purple denote zero-latency and mixed-latency
training, respectively. From left to right, panels show Demon Attack,
Asterix, Atlantis, and AirRaid, evaluated at delays of 0, 2, and 4 raw frames.
Each point is the mean episode return over 20 evaluation episodes.}