We strive to maintain the lowest memory footprint possible for the Kast app and continually make updates to optimize the memory used on your system.
If you watch your operating systems resources you will see at times memory reservations that rise and fall around the 500 mb mark. Some parts of the app require more memory to manage some require less. As you navigate around Kast you should notice a pattern of memory increases and decreases as you use different features.
As a rule of thumb, the more individual video and audio streams that are happening at the same time, the more memory is consumed. You can mute others or turn of their video to decrease memory use.