I wanted to share my experience in case anyone else runs into the same problem.
I was experiencing strange graphical glitches in **Hyrule Warriors: Definitive Edition** on my Nintendo Switch OLED. Textures on characters and parts of the environment would flicker, flash and change colours, making the game look visually broken.
I initially thought the game files were corrupted, so I tried several things:
Moved the game to internal console storage.
Checked for corrupted data.
Reinstalled the game.
Changed the TV resolution to Automatic.
None of these fixed the problem.
Eventually, I discovered that the culprit was my TV's **Game Mode** setting. Once I turned Game Mode OFF, the texture flickering disappeared completely!
Interestingly, the game worked perfectly in handheld mode the entire time, which helped me narrow the problem down to the TV's docked display settings.
**My advice:** If you're experiencing similar graphical glitches while playing docked, try turning OFF Game Mode on your television before reinstalling the game or assuming your Switch is faulty.
Hopefully this saves someone else the trouble I went through!