There is nothing wrong with your voltages. Your CPU voltages are just responding to changes in load.
The rest of the voltages? I do not trust any of them. Your monitoring software is not reporting them correctly.
You can check most of the PSU voltages from the BIOS in the PC Health section.
Use a DMM to measure the voltages. Measure between the colored wires and either chassis ground or the black wires. Yellow wires should be 12 volts. Red wires: +5 volts, orange wires: +3.3 volts, blue wire : -12 volts, violet wire (standby power supply): 5 volts always on. Tolerances are +/- 5% except for the -12 volts which is +/- 10%.
The gray wire is really important. It should go from 0 to +5 volts when you turn the PSU on with the case switch. CPU needs this signal to boot.
You can carefully work from the back of the main power connector.