It is slooow. Slow for viewing, rating and developing. Using DLO makes me wanting screw my head off and throw away for an idea using it all.
Finally I found a very stupid and very "workaroundy" but working way to add WATERMARKS on photos using only DPP! Yes, finally watermarks with Digital Photo Professional by Canon. But this is so stupid way, that I shame to write about it 
Let's hear it anyway!
Jeeez. But this is so stupid... It works for me with version 3.11.31
OK. You need to have a jpg, or CR2
with your watermark. You need to put it into same folder, where your CR2 file is. You open a CR2 file and choose "Start Compositing Tool" from Tools menu. Having your photo seleced, you select the watermark image for foreground and depending on the photo and watermark background colors you choose an appropriate Composite method. For example below I've chosen "Add". You can finally choose the correct watermark image placement with the arrows below.
Good thing is, that the Compositing Tool preserves CR2 settings made before, so DLO for instance. If someone doesn't use Lightroom, Photoshop or sth like that, but likes DLO results, I think the described process is the best for them to obtain a watermark on their images.
The watermark used here is just an example, I know it could look better
But this so stupid....
