In some earlier blogs I spoke about the difference in difficulty adjustments between legacy Bitcoin and its fork - Bitcoin Cash. Basically, if Bitcoin loses too much hashpower to Bitcoin Cash, it may become too difficult to mine blocks, resulting in slower transaction times with higher fees, leading to a lower price, which leads to more miners leaving, and the cycle repeats. Above is a chart showing the amount of hashpower of each chain since Bitcoin Cash's last difficulty adjustment.
As predicted, as Bitcoin loses hashpower, more transactions are getting stuck:
