Hi Paul Huston
first try to use only the RC and nothing else, when it is reconstructing a model, take a look at the temperature of the GPU with help of the MSI afterburner: https://www.youtube.com/watch?v=aqRhKA4EEaQ and set the fan speed to higher speed so that the card is cooled better.
These issues are mostly because the GPU is overheating and drivers try to down-clock the GPU to get it cooler, but then it can cause some synchronization issues and get into errors…