I'd probably go for GPU first, but it may be the drive. If there's no option in Dolphin to change the dump location, then you may have to chane the destination folder in the source code, and compile it yourself.
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
