Computer-based instruction has become an increasingly popular tool in both business and education throughout the last decade. Despite the various benefits of using computer-based instruction, there are several challenges that accompany this mode of instruction, including computer-based racing. Computer-based racing occurs when learners respond so quickly that frequent mistakes are made. The purpose of the current study was to investigate the effect of postfeedback delays and different feedback options on performance with online lessons conducted in uncontrolled settings. Six different computer-based instructional formats were assessed in terms of learner performance using a between-group pretest-posttest design. Statistically significant differences were observed for both the delay and feedback variables. The results of this study extend the current literature on postfeedback delays by suggesting that an overt form of self-evaluation during a delay may not be necessary for postfeedback delays, and that postfeedback delays may be effective in uncontrolled environments.