When comparing Mirillis Action! vs ShadowPlay, the Slant community recommends ShadowPlay for most people. In the question“What are the best software tools for live streaming?” ShadowPlay is ranked 5th while Mirillis Action! is ranked 6th. The most important reason people chose ShadowPlay is:
If you want to record 1080p 60fps, this will get you there. If you were having performance issues using CPU encoding before, Shadowplay will most likely work 10x better that you swear that it doesn't appear to be recording at all.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro It records without using the CPU and consumes less resources than OBS and is several times more fluid and intuitive
It consumes less resources and is more fluid than OBS. For example, a 1 GB GTX 750 records perfectly in 1920 x 1084 at 60 fps up to 4K, without using the processor, only the graphics card. Trying to do the same with OBS, the recordings do not exceed 15 FPS, nor is it possible to stream with OBS. With Mirilis Action it is possible to stream in high quality at 60 FPS, no matter the platform, it is fluid (tested with 8000Kbps upload and stream with 8GB Ram at 1600Mhz).
Pro The only software to record audio from selected application or game (not including unwanted sounds from the system)
Pro Recording webcam or USB/HDMI Capture Devices
Pro GPU accelerated encoding
If you want to record 1080p 60fps, this will get you there. If you were having performance issues using CPU encoding before, Shadowplay will most likely work 10x better that you swear that it doesn't appear to be recording at all.
Pro Allow recording video after the fact
ShadowPlay can set up a recording buffer and only save to a local file if needed.
Cons
Con Nvidia cards only
Only works with Nvidia cards, so those with AMD cards will not be able to use this app.