Change list:
 
- Improved MSI On-Screen Display server v4.2.3:
- Improved video frames timestamping approach may improve smoothness of videos captured on low framerates
- Improved RTV1 codec provides better compression ratio (significantly better under certain conditions) without affecting the image quality and encoding performance
- Added alternate RTV1 compression mode providing 1.5x - 2x better realtime compression performance at the cost of some minor image quality loss. Video quality slider is now unlocked for RTV1 format, 100% quality selects original compression mode whilst any other value selects new high performance compression mode
- Now MSI Afterburner displays captured video file time, size, per-frame compression ratio and time in the On-Screen Display next to the video capture progress indicator
- Now multithreaded video capture optimization is forcibly disabled by default on single core CPUs
- Kernel mode RTCore driver has been upgraded to v1.6. New driver introduces RivaTuner-styled experimental protected MMIO IOCTLs and removes outdated IOCTLs dedicated for some old and currently abandoned RTCore technology based applications (HIS iTurbo and RMClock)
- Now MSI Afterburner starts significantly faster than before due to optimized I2C devices scanning, cached database access and optimized GPU context switching in profile load routine
- Fixed RTV1 codec installation issue on 64-bit systems
- Now power users may unlock additional hidden video capture formats via the configuration file
- Now screenshot and video capture quality can be adjusted with precise 1% steps instead of 5% steps in the previous version
- Now video capture framerate can be adjusted in [1 FPS; 100 FPS] range with precise 1 FPS steps instead of [25 FPS; 100 FPS] range  
- Added Polish localization