Hi
long long time ago I was beefing cause the same story...my X6sq indoor on the beginning geared to 17/78, LRP SPH Comp ESC timing ZERO everithying switched off... and the 6,5 Octa was stil hot.
Than I installed cooling, lillbit better but still very warm.
Now indoor I run 23/78 and no cooling....the motor is hot but I dont care,, and probably the Octa also
Outdoor I run 8,5 Octa and same story.... HOT