AI Upscaler makes things look worse ... why?

[SparkieShock]

Okay .. I admit defeat. After trying the upscaler I have found that all it seems to do it to downscale things?

Clearly I'm using it wrong .. but I fail to see how. Once enabling the upscaler .. and selectring 2x2 or 4x4 you'd think it would turn a 1080 image into a 2160 .. or something along those lines. Instead the opposite is happening where the image is becoming less in resolution.

Any suggestions?

First image .. upscaler is OFF

Second image .. upscaler on 4x4

.....WTF?

[ricky_otoy]

What you are seeing is when you use 4x4, octane renders the image 4x smaller and upscales back to your current resolution. Turning on AI upsampling should help.

[SparkieShock]

But I do have it on ... and everything looks worse.
The button for 'Enable AI upsampling' is ON.

There's nothing else to select, so I don't understand what to do about this. Except to not use it because it is reducing resolution.

[ricky_otoy]

Try setting your resolution to the scale you want your output to be. (ie. 4000x4000) Then use the upsampler at 4x4. This will effectively render the scene at 1000x1000 and upsample back to 4000x4000.
I think it works better on larger images if I am not mistaken. That being said, I would rather set your required higher output resolution with lower samples and then use the denoiser.