How to fix screen tearing on Sapphire RX 7800 XT Polar?
I kept seeing this eerie horizontal glitch across the screen, and that tearing sensation was incredibly distracting in the gloomy corridors of the Ishimura. Looking at my setup, the Sapphire RX 7800 XT 16G Polar Edition OC has such a high factory overclock that when FreeSync was active, the driver sampling rate and the monitor's refresh rate were drifting by a few microseconds between 143-145Hz. My first instinct was to enable V-Sync in-game, but that bloated my input lag to 35ms, making the controls feel like I was playing through mud. I eventually went into the AMD Adrenalin software, disabled all the 'enhancement' fluff, and manually locked the refresh rate to exactly 144Hz while forcing the sampling rate to a 60Hz integer multiple. Using GPU-Z, I saw the frame generation interval stabilize at 6.9ms, and the tearing vanished completely. I did hit a snag where an aggressive Undervolt caused the system to crash twice during heavy scene loads, and I had to bump the voltage compensation by 0.02V to stop the CTDs. Core temps sat between 62-67℃, and those white Polar fins are actually doing their job. After 4 hours of testing, the sync is perfect and junction temps stayed between 58-63℃.
