Consistency is the enemy of emulation. One update can fix one game but break ten others. By sticking to a "Verified" build like 121, you are choosing a version that the community has collectively agreed is the most stable for the current generation of handheld hardware. It balances battery life, heat management, and raw frame rates.
Dolphin Emulator for Handhelds: The Ultimate Guide to Version 121 Verified dolphin for handheld 121 verified
Choose Your Backend: Go to Settings > Graphics > Video Backend and select Vulkan. Consistency is the enemy of emulation