Fixed sound stuttering issue (May not be completely gone but should be less of it).

Mupen64Plus and Parallel64 now include Angrylion plugin which should be used for best performance.

Cores that did require it were built using the older SDK)

Converted most cores to OOSDK (Some cores require libc++ which isn't quite ready yet with OOSDK.

All cores updated to their latest version.

R4 is finally ready! This release comes with a number of changes and improvements including: A number of other improvements have been made as well, see all the details in the release notes from the developer, included below. Some of the highlights are dynarec support for the Flycast (Dreamcast), Also Mupen64 Plus & Parallel64 (Nintendo 64) have increased performance with support of the Angryjion plugin.

This release also include some new features as well, the complete list of new inclusions can be seen in the details provided in the R4 release notes below.

This release is built on v1.8.8 (of RetroArch) and the update also includes some new libretro core's for the PS4 (gameOS) and those include PPSSPP (PSP), MAME 2015 (Arcade), Beetle Saturn (Sega Saturn), VitaQuake 2 (Rinnegatamante's Vita Port), Opera (3d0) and various other retro console from the past as seen in the listing of new cores included. While there there has been alot of cores converted to the r ecently released Open SDK (OOSDK) due to the Open SDK still being new and in the early phases something's like libc++ support for instants is missing support and thus preventing some libretro cores from being converted to the Open SDK currently (More then likely when everything is converted we will see this port actually become officially adopted by the libretro team). Scene Homebrew developer released RetroArch (PS4) R4, since the R3 release we have seen a number of changes and improvements to the multi-system emulator that is still considered an unofficial port.

Roms for ps4 emulator