Hello, Even though RAM is free, if the internal memory is running out, then performance of the phone can get degraded. Here is typical reason for software lagging: Too many apps open in phone/Heavy Gaming/Heavy Streaming-playing/heavy media for very long hours/Outdated software. There are some tips to free the internal memory: 1. Save photos/videos to EXTERNAL SD card by default rather than internal storage. 2. Move the 3rd party app and games to SD Card. 3. Clean your junk and cache files 4. Uninstall apps you do not use. I hope this will help you. Thanks.
