When id Software and Panic Button released the v1.2 NSP update, the log was short on paper but massive in practice. Here is the breakdown:
Absolutely. The Switch OLED and Switch 2 (backwards compatibility rumors aside) still benefit immensely from this patch.
Without the update: The game is a technical curiosity—interesting but frustrating. With the v1.2 update: DOOM (2016) is arguably the best portable FPS game ever made. DOOM -2016- Switch NSP UPDATE
The combination of Gyro Aiming and stable framerates transforms the experience. You can complete the entire campaign on "Ultra-Violence" difficulty comfortably using Joy-Cons alone.
The biggest complaint about the DOOM -2016- Switch NSP Update is the storage requirement. When id Software and Panic Button released the v1
This is massive for a Switch game (larger than The Legend of Zelda: Breath of the Wild).
Pro Tip for Storage: Do not install the update to the internal storage (32GB). Use a High Speed U3 MicroSD card (256GB or higher) . DOOM streams textures constantly; a slow SD card will cause micro-stutters even with the update installed. The biggest complaint about the DOOM -2016- Switch
Can you merge them into one XCI?
Yes. Advanced users can use tools like NSC_Builder to merge the Base NSP + Update NSP into a single "Super XCI" file. This saves roughly 1-2GB of wasted space compared to separate installs.