Dolphin can't use more than two cores for the two main threads, so 50% CPU use is full load on both the cores it's actually using. It would be completely possible for a laptop to overheat with two cores at full load.
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
