I don't watch soaps.
However after consultation with Mrs sqad, she feels that it is 50/50
50% of the time his acting is good, not very good, but good and the other 50% of the time he overacts, exaggerates and spoils the effect.
Oh dear jennyjoan you seem outvoted, but I have to say my first reaction to Ken's acting was the same as yours. I didn't think it was good at all, quite cringeworthy, so it goes to show what we know ha!