Why do I get random micro-stutters in Delta Force on Onda B760ITX?

Occasional micro-stutters during tactical combat felt like finding grains of sand on silk—extremely distracting. I tried disabling all Windows power-saving options; the CPU frequency locked, but micro-stutters remained random, making the attempt feel futile. I used the GamePP BIOS Load-Line Voltage Adjustment Wizard to switch to L3 mode and set VCCSA to 1.22V. RTSS frame time stabilized at 11-15ms, and HWiNFO showed voltage held steady at 1.22V.