After 5-15 minutes of gameplay I got visual glitches and crash without error.

My system:
CPU: AMD Ryzen 5 5600
GPU: AMD Radeon RX 6750 XT
Mainboard: ASRock B450M Pro4 R2.0
RAM: Kingston FURY Beast 8GBx4(32GB) DDR4-3200 MHz
System: Windows 10 Pro
Monitor: LG 27GN800P-B IPS 2k 2.560x1.440 144Hz
The game is located on system storage (Samsung 980 Pro 1TB)

The way I fixed the crashes was:
I set all of game exe files (fc3 , fc3_d3d11 , FC3UpdaterSteam) to compatibility mode with Windows 7 and run as administator mode. You should also set the run as administrator mode for Steam and Ubisoft Connect to get the possibility for saving your statistics (played hours, for example) and working the steam overlay. Just go to direction, where your game is installed, then to "bin". There are the exe files of the game. You should set compatibility mode with Windows 7 and run as administator mode. After that go to direction of Steam and Ubisoft Connect and set the run as administrator mode, but WITHOUT compatibility mode with Windows 7.

Another ways to solve the problem can be:

-Set the lighting mode from SSAO to HDAO (if you play on dx11)
-Set graphic settings to low
-Manually lock FPS to 60 (For example with RivaTuner)
-Disable TabletInputService (Open Task Manager, go to Services, find TabletInputService (Touch Keyboard and Handwriting Panel Service), disable the service and stop it)
-Enable Vsync
-Go in: Documents>My games>Far Cry 3, and then open file named "GamerProfile", open it throught nootebook or microsoft notepad, you must find "D3D11MultithreadedRendering" in fourth line, and if you have 1 instead of 0, switch to 0
-Delete/reset settings file (C:\Users\username\Documents\My Games\Far Cry 3\GamerProfile)
-Try to play in other DirectX mode (9 or 11)
-Disable MSAA
-Play at windowed mode
-If you have a CPU with a big count of cores (8+), try to disable some of them (Enter to Windows Search "System Configuration" and start it, go to "Boot" tab, click "advanced options" and set the count of threads, that you want to use)
-Update libraries (.net framework, DirectX, Visual C++)
-If the game is located not on the system storage, try to install the game on it (Disk C)
-Update drivers of your graphics card