On September 5th 2013, REAPER version 4.52 was released. The small update includes fixes in the MIDI editor, and performance improvements.
- Actions: various actions better respect edit cursor in undo state
- Graphics performance: fixed high CPU use when displaying media items with many embedded cues
- MIDI editor: better cursor positioning on note edge clicks .
- MIDI editor: fixed scroll issues, improved play cursor behavior
- MIDI editor: track and channel selection available in both piano roll and event list view
- MIDI editor: fixed channel filter initializing incorrectly when loading projects
- MIDI: fixed pasting events into blank area of arrange view
- Metering: fixed track metering inaccuracies on looped playback
- Playback: fixed rare but possible increased memory use when changing loop selection during playback
- ReaPlugs: improved undo point notification for various controls
- Routing matrix: fixed scroll issue .
- Video: fixed audio decoding issue when using VLC decoder on files containing a 32bps audio stream