The article deals with the problem of choosing the optimal visualization system and configuration of virtual training complexes for training and practicing planned actions at the workplace, and in an unstable environment. The calculation of the complexity of the software being developed is based on the choice of a high-quality representation of the visual system and the minimum software and hardware configuration that allows developing the necessary practical skills for the trainee, based on the requirements for working conditions, used production equipment and infrastructure elements. For a comprehensive development of possible production scenarios, it is necessary to develop a mathematical model that provides for many possible states of both the user and his environment in virtual reality, after which to set and solve the problem of structural-parametric synthesis of the visualization system. This approach ensures that the system is responsive to user actions, which means it allows you to provide a better immersive experience. Analysis and formalization of the structure of software and hardware is considered on the example of calculating a virtual simulator complex for training specialists in the mining industry. Several configurations are proposed, differing in the layout of the simulator, and on their basis, the cost and time of developing systems are calculated. As a result of testing focus groups on different configurations, the optimal choice of the training complex was proposed in accordance with its efficiency, cost and development time.