Yes, hair specifically is understandable but other complex objects are just more finicky to select in GIMP, and using those selection tools has a higher frictio

Yes, hair specifically is understandable but other complex objects are just more finicky to select in GIMP, and using those selection tools has a higher friction. I often find myself fiddling with tool settings in GIMP, and those tool options panels are painful to adjust. Regarding rendering, wherever the issue is in the stack, it's been over a decade and it's killing GIMP's usability for an extremely basic task, regardless of whose fault it is.