Why is my Sapphire RX 7800 XT 16G crashing in MGSV?
Every time the game loaded high-res textures while infiltrating a base, it would just CTD (crash to desktop) without warning. I noticed the memory clock jumping erratically between 2000-2500MHz. I actually panicked, thinking the card was a lemon. I wasted hours swapping out three different PCIe power cables, which was a total waste of time and left me feeling defeated. I eventually used the AMD Adrenalin panel to manually lock the memory clock at 2300MHz and switched the power plan to High Performance. My monitoring showed core voltage fluctuations tighten from 0.11-0.15V to 0.08-0.10V, and FPS stabilized at 62-65 instead of swinging between 45-70. Interestingly, my first try at lowering the core clock just made the game stutter more; it only became stable after I added a memory voltage offset. There's still a tiny dip during scene transitions, but the crashes are gone. System logs confirm the memory access violations have stopped, and the controls feel snappy again.
