Solution: Problems using a limiter on final mix causing excessive sibilance. Reply for Shaka from Masterclass session

Turn off single band compressor at final mix stage and deep dive into the audio track using spectrum view and fix the problem there.
Leave headroom in final mix for mastering min -3db.

Thanks @The_Tone_Arranger!

What was the question for reference of others who may need the help?

Using a limiter on final mix causing excessive sibilance.