How can I stop lighting flickering and color overflow when using high-precision MODs in Cities: Skylines II?

The flickering lights were maddening during night builds. I tried lowering shadows, but quality suffered. I used GamePP DLSS/FSR Calibrator to adjust sharpening after a clean driver install. HWiNFO monitored stable voltage. RivaTuner showed frame times dropping from 22-35ms to 13-16ms, eliminating the visual artifacts.