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Considerable research has found that adding audio to desktop conferencing improves problem-solving, but that there is no additional benefit from adding video. This paper describes an experiment that supports these earlier findings, while suggesting that video may provide significant benefit when used in tasks involving speakers with different priorities and different linguistic capabilities. The level of conflict in the experimental setting is consistent with that found in work settings, but is higher than that in most experimental situations. Tasks involving a mix of native and non-native English speakers are not universal but may be increasingly common. Thus, these findings provide encouragement to those working to improve videoconferencing technology.