Very interesting report. I use this site for monitoring the Sun and observing sunspots using a glass, white-light solar filter attached to my 90-mm refractor telescope, https://www.spaceweather.com/
According to stellar evolution and plotting the history of the Sun on the H-R star diagram since the origin of the solar system, the Precambrian Earth had the Faint Young Sun and a rapid spinning sun too. Initial rotation about 25 km/s at the solar equator but today near 2 km/s. The primordial Sun would be much more flaring, many sunspots and very active, much more hostile to life on Earth. There was even the period of snow ball Earth during the Precambrian too.