Kerbal Space Program

+1 for this issue

Conditions: RTG + solar array + single battery, various science instruments, anything that draws power. Ample power for configured mission

Steps to reproduce:

1) As mentioned above, during positive and negative increments of the time compression feature, spacecraft power draw spikes resulting in a loss of craft control.
2) Observed loss occurs during time compression ramp-up and down, once compression is complete power stabilizes. Most noticeable at X10000 and x100000

Work Around:

1) Adding a larger battery seems to compensate for the momentary loss of generation ( depending on mission profile )
2) Adding additional power sources of power does nothing, all generations sources are nulled.

Some results:

1) during compression, power drain goes from 0.3 to 70units under full load
2) disable accelerometer and repeat time compression test, drain is now 50 units

Posted by someone on the forum:
"RTGs fluctuate because they run in Update instead of FixedUpdate. You can observe this by creating a module which consumes resources during Update; RTGs supply it smoothly, and everything else will make it fluctuate."