Looks like allproblems mentioned If you like the leaves and cannot get IBL right,,,use your big 30lightset and render it without figure(post 4). Save iy as leaves.tiff... Blurrrrr them a bit in paint.. (Fake focal And/or File>import>background picture.. Move/rotate tree prop over new bg pic.. rerender,,,save as ,,, blurrr in paint a bit less,,, Import new 2 level Blurred leaves.tiff and unhide figure....delete/hide tree prop, render,,,yada yada Many ways to make this bearable and not go crazy