I'm using Void Linux (gcc libc not musl) 64 bit
[chris@chris-N150CU ~]$ glxinfo | grep "renderer string"
OpenGL renderer string: Mesa Intel(R) UHD Graphics (CML GT2)
[chris@chris-N150CU ~]$ cat /proc/cpuinfo | grep "model name" -m1
model name : Intel(R) Core(TM) i7-10510U CPU @ 1.80GHz
I did boot into an old version of ubuntu and that pegs a core at 100% unless the window is maximised, but its a year or more since I booted that horror show...
Best guess I'd say Unity and gfx driver combo...? but even Kerbal Space Project doesn't peg a core, so not sure.