Upload the initialized Texture data after creation from script.
When set, if you create a Texture from script the initial data is cleared and automatically uploaded to video memory. This was the default behavior in previous Unity versions. In most cases this upload is not needed and wastes bandwidth because the GPU data gets overwritten anyway. You typically upload (by calling Apply) or copy new data into the new texture right after you create it. Only turn this on for debugging purposes or if your project depends on having the GPU texture data cleared. You can get the same result by adding an Apply() call after calling the Texture2D constructor.