How many steps are needed to show progress in locomotion?

My problem is such: I have to use the cpu to train my agent , so running 1600 steps per episode on bipedalwalker, half cheetah etc is out of the question. Are 200 steps fine as a starter point ( assuming the agent can get a score 300 for 1600 steps, that would set the score at 37.5 for 200 steps) so if the agent is able to get to 40 score then for testing I could just run for 1600 and it should get 300?