Cemu 1.7.1 news (Patreon)

Cemu 1.7.1 will release on 2nd February for 5$+ Patrons and a week later for everyone else.

For this update we prioritized performance, bug fixing and compatibility.

JIT Recompiler speed ups (Faster CPU emulation)

1.7.1 will come with improvements to the PowerPC recompiler. Since CPU emulation is the most taxing part of Cemu, all games benefit from these optimizations to some degree.

To put things into perspective, I did a bunch of quick FPS comparisons (1.7.0d versus 1.7.1) on my Laptop (i7-3630QM 2.4GHz, GTX 670MX, 8 GB RAM)

Here are the results (all numbers are in frames per second):

• Pikmin 3 title screen: 16-17 to 30 (fullspeed)
• Mario Kart 8 (Grand Prix): 38-43 to 38-45
• Wind Waker HD (Outset Island):  16-18 to 28-30
• NES Remix Pack: 11-12 to 21-22

As you can see from these numbers, some games (Pikmin 3, Wind Waker HD) got an immense FPS boost while other games only see slight improvements. Not all games are limited solely by CPU emulation speed, so the results aren't that surprising.

As it is with all performance optimizations, whether you see huge FPS gains or not depends on your hardware setup.

Noteworthy bug fixes so far

• Touch input in Twilight Princess HD is now working
• Several recompiler related crash fixes (for example, the YWW parcel crash is fixed)
• No more slowdowns if inactive/unplugged controllers are configured
• Fixed a few graphic pack related crash bugs

Plus more!

Compatibility

Internally, we made some progress by improving support for some rarely used Cafe OS features. Based on early tests, it looks like QUBE is now working, Don't Starve Giant Edition almost goes ingame and Devil's Third goes up to the intro screen. Since there is still development time left, we hope to get at least 1-2 more games booting.

VRAM usage reduction

Originally we announced reduced VRAM consumption for 1.7.0 but it ended up causing unexpected issues. Currently, we are still ironing out the bugs. Hopefully this should be ready for 1.7.1.

A reminder for new 10$ Patrons:

If you want your name to appear in the about menu of Cemu, please send us a message with the desired username.