ASUS Stylus problems

I have a new Asus Zenbook Pro Duo which came with an Asus Stylus. This device has problems with the pen pressure, or doesn't even work at all. First, I've tried it in Adobe Photoshop, where the pressure worked, but it wasn't possible to draw a consistent line, they were always broken as if spacing was activated (which I checked and it wasn't). Then I've tried Realistic Paint Studio, which didn't recognize pen pressure. I contacted the creator of this app who told me to install Wintab, which I did. Then, pen pressure shortly worked in Realistic Paint Studio. Then I installed the Wacom driver for my other stylus, and since that, Realistic doesn't recognize pen pressure again, and Photoshop reacts by changing the pointer's position with the pen but doesn't recognize any other input, ie I can't draw in Photoshop at all with the Asus Stylus. 
Here's a list of apps that I have tried:

• Clip Studio Paint: A: No pressure W: works
• Realistic Paint Studio: A: No pressure W: works
• Photoshop: A: No click with pen, no input except position W: works
• Illustrator: A: No PP W: Pen pressure working
• Blender: Pen pressure working
• Fresco: PP active
• Animate: Active
• Journal: Active
• MS Whiteboard: Active
• OneNote: active
• Krita: A: no W: Yes (Both Wintab & Ink)

(A: Asus, W: Wacom)
Please help me!