@MichaelL I created three levels of pyramids:
But the speed seems unaffected. Takes ages…
Regarding the lousy image quality: Where do I set the resolution? Can’t find it…
And finally: What did you mean with “Also, make sure to check the box when exporting to create a world file”… Which box? 
And to both @MichaelL and @jmaeding: THANK YOU for your kind assistace!
R
From the looks of the resolutions that it offered you I don’t think you should have had a performance issue even with the native image, but it will depend upon your computer performance. Loading hi-res geotiffs can take allot of RAM, but also make sure your video drivers are up-to-date.
I’m not in front of a computer but when you go to file, import/export the resolution should be about halfway down the next window. First get the map positioned the way you want it to look on the new image and in that import/export window choose extents from canvas. Then go down to below where it says the scale and click the lock on the right to preserve your aspect ratio. Enter the resolution that you want in one of the boxes. Just below that there are two check boxes and one of them is to create a world file if it is not already checked.
@KRWaara
Right, we need to back up a little. Generally the ortho from drone data is huge, and high res.
Its too heavy (too many pixels) for most uses, and not necessarily so.
First, I normally do not have to deal with reprojection situations. My CRS in my ortho creation software (Agisoft or DD, Pix4d…whatever) is set to state plane for my area. If I did need to reproject, I do that first in QGIS.
Second issue is resampling the image to say, 1/4 its size which means 50% reduction in pixels on each side. I use the free GIMP program to do that. I save as jpg.
Now the issue of the “world file” comes in, as that is how everyone that does not use geotiff tells progs where images go. I guess GE users use kml, one more format.
What I do is pull in the full image to autocad, using the world file agisoft spit out. Then I pull in my downsampled images and line up with original, then run a too I wrote l to make the world file.
You will not have that so the equivalent is doing that in google earth, making the kmz instead of a world file.
The point is to make smaller images. Pyramiding might work in GE, never tried it. Its a GIS thing and have used it for that. You can skip that though and just go with a smaller image.
That should speed things up a ton.
I just processed a 2.2 GB Ortho at 90000 pixels wide through qgis without any reduction except pyramids for the GUI. I do have a quad-core processor and 32 GB of RAM though…
@MichaelL I guess my DELL Laptop doesn’t have the muscles to do this…
Hehe… Confused… Ultimately I found it… But… I can change the resolution, but after that I’m supposed to save it as a PNG. But how do I change the crappy resolution on the screen? I can’t find out where to do this. You mentioned that this can be done under “Properties”, but… well. I don’t get this…
R
Did you mean can’t change the resolution? I usually set it between 600 and 1200dpi.
Is this a question? You should get a TIF (geotiff) and a TFW (world file).
When you are zoomed in it should be the native resolution fo the image. What in/px did you download? Depending on the plan your plan you might not be able to download a resolution high enough to match the native resolution you can see in DroneDeploy…
As for the computer, can you message me your service tag and I can look at the hardware? Have you done any upgrades? I suspect you may not have enough video memory. I would suggest at least a 2GB Nvidia card which will also come with enough GPU.
Of course I mean: ”I can’t set the resolution”… 
Yes. Found the check box for ”World file” and also that i could change file format.
As what the resolution concerns I’m using the TIFF downloaded from DroneDeploy without any changes at all… 18688*24064. Max resolution, 1,5 cm/px. Looks fantastic opened in GIMP or Google Earth. Crispy and sharp. When i open it in QGIS I’m getting white dots all over the image.
The ”snake” is a pile of logs some 20 meters in length. Directly cut from QGIS after importing from the donloaded TIF.
What is the ”world file”used for?
Rgds Roger
Ten-Four. I’m not sure about the white dots, never seen that before. Could you please share your orthomosaic and I will check it out?
The world file is what allows Google and other Cad and GIS type programs to georeference the ortho automatically.
https://web1.storegate.com/share/ApffkR6
Give it some 15 minutes to finish the upload, and take a look. Looks perfect in my eyes…
R
Downloading it now. Going pretty slow, but I should be able to look at it today.
It’s 9:15 pm here now. Take your time. I appreciate your effort…
R
I am seeing the same issue with the white texturing in QGIS, but when I zoom in it appears to be fine? I did not create any pyramids and it initially loaded in about 90 seconds. Once it was loaded only the full extents view lagged for about 5 seconds.
Here it is from ACDSee.
If you look inside the KMZ’s created by GE SuperOverlay, you’ll see the images are all PNG’s. No TIF’s, and nor is the original geoTIF required.
Also noted is that the TFW and KML downloaded with the TIF from DD are not needed in the first place. The TIF is a true geoTIF, with all the geo info GE needs embedded.
