Sapphire RX 9070 XT stuttering underwater? Should I use DLSS calibration?

GamePP DLSS/FSR Image Sampling Calibrator revealed critical bandwidth issues. I reduced render resolution from 100% to 85% and switched DLSS from Quality to Balanced. Previously, GPU-Z indicated VRAM bandwidth saturation at 95%, causing RTSS to record latency spikes from 18ms to 32ms. After adjustment, RTSS confirmed frame time stabilized at 12-15ms, and frame rate improved from 55 FPS to 78 FPS, restoring smooth underwater immersion.