GTA V not recognizing Raiju Ultimate

Hi hello,

I'm new here and I'm looking for help. I've searched this Forum and the Support section but couldn't find anything related to my problem.

I have a Razer Raiju Ultimate which I'm using with the original USB cable on my Windows 10 PC (AMD Ryzen 5 2600 Six-Core Processor, 16GB RAM, AMD Radeon RX 5700 GPU), but I can't get it to work with GTA V...
- It works perfectly fine for Rocket League (I disabled the Steam controller support because it was messing up my bindings)
- It's being recognized by Windows in Settings > Devices > Bluetooth and other devices as two devices however: once as "Razer Raiju" but under "Audio", and once as "Xbox 360 Controller for Windows" under "Other Devices"
- This I think connects to my previous point: Eventhough I installed the Raiju Ultimate XInput driver multiple times already (first by just running it and installing it over the automatically installed drivers by Windows, and then by completely removing and uninstalling it from the device manager and re-installing it with XInput drivers) it is still being displayed as configured with a Micorsoft driver in both sections of the device manager: again, once as a Razer Raiju audio device under "Audio, Video and Game Controllers" and once as an XBOX 360 periphery device... But both times with Microsoft drivers
- The next thing is that I wanted to update the firmware for the controller, so I downloaded the "RaijuUltimate_FirmwareUpdater_v1.05.00 r2.exe"-file, ran it and connected my controller, but the program still tells me to connect my device and I can't click the update button...
--> So the most important and final problem therefore is that GTA V (which I'm not playing via Steam, I just launch the Rockstar launcher and it starts the game) won't ever recognize my controller at all... It's neither working in the menu, nor in the actual game, and I can't change any settings in the game for it either...

I would be very happy if anyone could share any experience they have with this problem and maybe we could even find a solution for it - that'd be amazing! I rly wanted to try GTA RP servers, but not being able to use my controller to fly and drive would be a huge disadvantage...

Thank you for any support and take care
Daniel