Either that's a syntax error, or I've got an outdated compiler.
Why not both?
Either way, I'm trying to say that I consider the following to be a thermal issue: you're using 100% of the available CPU time, but the CPU is running at a lower frequency because it gets too hot.
A symptom of this is that a CPU intensive task will finish measurably faster if you hold your laptop outside of a window in winter.
The CPU is definitely more powerful than whatever I'm using it for (most intensive tasks probably being Minecraft + server + two instances of IntelliJ). GPU is my goal here, and I've never seen it have a heat problem unless I'm using it at literal max capacity for hours.