At the very beginning, I apologize for my English. I have an RX 7900XTX Hellhound card, I recently started my adventure with PC games, I have a computer connected to an LG BX Oled 120 HZ TV and I play in 4K at this resolution. Recently I have a problem with the game Fallout 4, it works for now stable at 120 fps, so that it suddenly slows down to 80 fps. Maybe it's caused by some bad settings in adrenaline? What could be done to make it stable? I will also add that I have Windows 10 pro and all drivers updated, both in AMD and bios etc. I am also sending other quite powerful computer components. I am asking you for help.
MSI MAG X670E TOMAHAWK WIFI motherboard
MSI MPG A1000G 1000W 80 Plus Gold PCIe5.0 power supply
graphics PowerColor Radeon RX 7900 XTX Hellhound 24GB GDDR6
AMD Ryzen 7 7800X3D processor
LANCOOL III housing
G.Skill Flare X5 memory, DDR5, 32 GB, 6000MHz, CL30
Kingston KC3000 2TB game drives
for the Lexar NM620 512GB system
DeepCool AK620 DIGITAL cooling
additional fans
Lian Li UNI FAN SL-INF 140 ARGB PWM 140mm Black 2 pcs.