Debugging Global Illumination - Directionality

In a recent project I am noticing 2 main issues with my GI baking

1- For emissive lights I am getting ‘banding’ in the actual light being mapped

2- overall there is a lot of ‘unevenness’ and areas of darkness where there shouldn’t be

I am using a Realtime GI resolution of 8, and also tried in combination with a Baked GI of resolution 40.

In trying to debug these issues I looked thru the various view options in my Scene view. The only view that showed irregularities was my Directionality (attached).

Is there a possibility this has something to do with my imported mesh?

Any Ideas on this?
I’m struggling with exact the same issue!