How old is the car?

This might be worth checking, if you have access to VCDS, if your aircon takes too long to cool, its for MK7 Golf but should be the same for Octys

 

Golf Aircon Coding

 

OK, So I did find how to get there... Here are the instructions :

1. Open VCDS
2. Go To Select Modules
3. Under the "Installed Modules" window - select number 08 - Auto HVAC
4. After the control loads - select Coding - 07
5. Click the button for "Long Coding Helper"
6. Press Tab or arrow down key until you see "Byte 12" selected
7. Under the drop-down for "Bit 4-7" select "10 Temperature Adjustment: Cold (Hot Countires)"
8. In the top-left corner of the window - select the "Exit" menu item
9. Press the "Do It" button to save the new setting
10. If all goes well - you should see a popup "Coding Accepted"

Now, my AC blows cold MUCH quicker. I also tried adjusting the Bit 1-3 setting - to the option that says for the blower to blow stronger when cooling - but it didn't seem too

How old is the car?

The car turns 3 on Sept 9th. 

Yeah it could very well be that the refrigerant is running low then.