Screenshots of gamecube tab of config dialogue and GCpad menu please. Then we can check it is set up fully, and also can advise you on what your specific problem could be.
OS: Windows 10 64 bit Professional
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
