Avoid a DynamicSpectrum copy in downgrading method
Avoid a DynamicSpectrum copy in downgrading method

appleseedhq/appleseed,aytekaman/appleseed,docwhite/appleseed,Aakash1312/appleseed,Aakash1312/appleseed,Biart95/appleseed,aiivashchenko/appleseed,aiivashchenko/appleseed,appleseedhq/appleseed,pjessesco/appleseed,Vertexwahn/appleseed,docwhite/appleseed,est77/appleseed,pjessesco/appleseed,luisbarrancos/appleseed,docwhite/appleseed,Biart95/appleseed,Vertexwahn/appleseed,Biart95/appleseed,Vertexwahn/appleseed,dictoon/appleseed,appleseedhq/appleseed,glebmish/appleseed,luisbarrancos/appleseed,luisbarrancos/appleseed,Aakash1312/appleseed,gospodnetic/appleseed,dictoon/appleseed,gospodnetic/appleseed,glebmish/appleseed,appleseedhq/appleseed,gospodnetic/appleseed,pjessesco/appleseed,glebmish/appleseed,est77/appleseed,Vertexwahn/appleseed,dictoon/appleseed,gospodnetic/appleseed,aytekaman/appleseed,Biart95/appleseed,docwhite/appleseed,Vertexwahn/appleseed,aytekaman/appleseed,docwhite/appleseed,Aakash1312/appleseed,glebmish/appleseed,est77/appleseed,pjessesco/appleseed,dictoon/appleseed,aiivashchenko/appleseed,luisbarrancos/appleseed,luisbarrancos/appleseed,Aakash1312/appleseed,appleseedhq/appleseed,est77/appleseed,gospodnetic/appleseed,aiivashchenko/appleseed,aiivashchenko/appleseed,aytekaman/appleseed,est77/appleseed,aytekaman/appleseed,glebmish/appleseed,pjessesco/appleseed,Biart95/appleseed,dictoon/appleseed