How to fix screen tearing in Helldivers 2 with a Western Digital SN850X?

I dealt with severe horizontal screen tearing in Helldivers 2 during chaotic airstrikes, with FPS swinging wildly between 80-120 per RTSS. I tried enabling V-Sync in the driver panel, but input lag spiked to over 40ms, making controls feel like mud. I used the GamePP DLSS/FSR Image Sampling Calibrator to lock the sampling rate at 100% and activate Enhanced Sync. RivaTuner then showed frame times converging to 7-11ms, and AIDA64 monitored fan speeds remaining stable at 1600-1700RPM.