@jwcph @bricks I'm sure you have checked all the usual suspects like bed levelling, belt tension, extruder drive wheel not clogged, filament not too old or damp. Supports are usually printed at a higher speed than the main part, so that could be a factor, as it can result in under-extrusion. Another thing that springs to mind is drafts or temperature variations, which can prevent layers from fusing properly, and also shrinkage of the part. Worth a try is reducing the print speed to see if it helps, and making sure that there are no drafts.