Log Switch Wait Count Ratio
Log buffer switches usually happen without any waits. A high Log Switch Wait Count Ratio indicates that the system is experiencing delays when trying to switch log buffers.  
As seen in below attached screenshot , high log switch ratio may be due to Slow I/O or High load in the system due to peak hours. 
We have not experienced any performance issues in the PFB system regardless of this event. 
Hence we are closing this incident as no action pending from our end.