The RATE project concluded that nuclear decay rates were accelerated by a factor of around 500 million times currently measured rates during the Creation week and again during the Flood.
They have no solution to the problem that the heat created by this rate of decay would heat the Earth’s surface to over 22,000 degrees Celsius.
Barry Setterfield wrote some really interesting stuff about accelerated rates of radioactive decay. The higher rates of decay were a direct result of the then-higher speed of light. But the decay rate wasn’t the only aspect of radioactivity that would have been changed by difference in speed of light. He suggested that the energy of each disintegration would have been less because of the increased speed of light. It’s wrong to fail to disclose the assumption that the billions of years of atomic time discussed in the article is equivalent to the same amount of years in orbital time.