Misfire codes P0352, P0353, P0355, P0356 and P0357

I'm getting misfire codes p0352, p0353p0355, p0356, p0357. Primary misfires. Also, a more expensive code reader also gets a low voltage code. My car will set these codes only in drive at stoplights and occasionally at lower rpm's. When the car misfires the battery light will sometimes click on and then turn off. When I put the car in neutral or rev the engine the misfires stop after a moment. Also, if I put car in neutral at stoplights, misfires don't occur. At high rpm the car runs fine, really well actually. I replaced the PCM, 7 coils and plugs, serpentine belt (thinking a slipping belt could produce low voltage) a crank position sensor, and idle control valve. Again, in neutral and park it doesn't misfire. Maybe a tad on takeoff, but clears up. The battery and alternator are good. I noticed the PCM fuses read lower voltage, about.5 lower than the other fuses. My PCM fuse is not "hot all the time". Maybe it shouldn't be. Plus, the check engine light never comes on even after trying to force it to. I do get all the codes that seem to be happening. The ground by the battery and firewall are also good.