I'm using QGIS 2.14.3.
Is it possible to render bottom layers after higher layers while still keeping them underneath? (or can rendering only be bottom-up?) I have seen the "control rendering order" panel but changing the order here changes the bottom/top order in the canvas.
I'm thinking mostly about rendering heavy bottom rasters or web-based satellite images (openlayers or quickmapservices) after lighter top vector layers, in order not to have to wait for it every time one moves the canvas or zooms.