Toggle sidebar

Dekopon - (Mostly) Fullspeed 3DS Emulation on Nintendo Switch

A new pre-release version has been released. Due to it's nature of being a PR, expect breaking bugs and glitches. If you prefer stability, I would not recommend using this version, however, if you want to play a game that has poor performance on the current stable build, it may be worth checking it out. Get it here: https://github.com/PalindromicBreadLoaf/dekopon/releases/tag/v2.0.0-RC1

New features:
  • Async GPU threading
    • This is expected to break games and is a hack, however, in games that couldn't reach fullspeed before, this is a huge help assuming it doesn't crash.
    • Enabling this feature requires a restart of the emulator.
  • More verification of game files to prevent crashes while loading from corrupted roms
  • Some game-specific crashes may have been fixed. I don't have the games to test.
  • The shader compilation notice is now toggleable. This should remain disabled for the best performance.
  • Bump nxvk version for slightly faster shader compilation times.
Known Issues:
  • The emulator crashes upon trying to re-open it within the same hbloader session. No idea why this happens.

Please report any bugs/crashes that you experience here. @halibali specifically, this may have fixed the crash you were experiencing. Please test and report back if it has please :).
 
  • Like
  • Love
Reactions: Freyjadour, hippy dave, albarapa and 3 others
albarapa said:
With them enabled mk7 works full speed without an overclock in Raikopon. So I thought it could also be a good addition to Dekopon
Click to expand...
Mario Kart 7 already runs full speed without overclock even before this update. Well besides on Luigi Raceway, but otherwise it's full speed.
 
  • Like
Reactions: jeferey and ber71
albarapa said:
With them enabled mk7 works full speed without an overclock in Raikopon. So I thought it could also be a good addition to Dekopon
Click to expand...
I noticed that screen makes the game "ram frequency bound" have you tried increasing the ram at 1600 MHz in portable at least?
I noticed that the standard ram overclock for oled (2133) is enough to get over that bottleneck idk about intermediate values.

Also which resolution are you running?
I noticed that increasing the resolution raises the CPU requirements too, on that stage and on star cup stage 3.
 
PalindromicBreadLoaf said:
A new pre-release version has been released. Due to it's nature of being a PR, expect breaking bugs and glitches. If you prefer stability, I would not recommend using this version, however, if you want to play a game that has poor performance on the current stable build, it may be worth checking it out. Get it here: https://github.com/PalindromicBreadLoaf/dekopon/releases/tag/v2.0.0-RC1

New features:
  • Async GPU threading
    • This is expected to break games and is a hack, however, in games that couldn't reach fullspeed before, this is a huge help assuming it doesn't crash.
    • Enabling this feature requires a restart of the emulator.
  • More verification of game files to prevent crashes while loading from corrupted roms
  • Some game-specific crashes may have been fixed. I don't have the games to test.
  • The shader compilation notice is now toggleable. This should remain disabled for the best performance.
  • Bump nxvk version for slightly faster shader compilation times.
Known Issues:
  • The emulator crashes upon trying to re-open it within the same hbloader session. No idea why this happens.

Please report any bugs/crashes that you experience here. @halibali specifically, this may have fixed the crash you were experiencing. Please test and report back if it has please :).
Click to expand...
Thanks to the fix, the crashing issue in that section has been resolved.
However, the GPU usage now hits 99% in the same area, causing severe stuttering.
I tried adjusting the newly updated GPU settings, but that didn't solve the problem.

With the same settings in TICO, GPU usage is around 90% and there is no stuttering.

Overclock settings: 2400/1228/2666.
 

Attachments

halibali said:
Thanks to the fix, the crashing issue in that section has been resolved.
However, the GPU usage now hits 99% in the same area, causing severe stuttering.
I tried adjusting the newly updated GPU settings, but that didn't solve the problem.

With the same settings in TICO, GPU usage is around 90% and there is no stuttering.

Overclock settings: 2400/1228/2666.
Click to expand...
The GPU being the bottleneck is crazy and something I haven't seen before. Especially not at those clocks. I'll do my best to look into it. What res scaling are you using?
 
kazenohibi said:
I noticed that screen makes the game "ram frequency bound" have you tried increasing the ram at 1600 MHz in portable at least?
I noticed that the standard ram overclock for oled (2133) is enough to get over that bottleneck idk about intermediate values.

Also which resolution are you running?
I noticed that increasing the resolution raises the CPU requirements too, on that stage and on star cup stage 3.
Click to expand...
Usually I play in docked so yes ram is at 1600 MHz. I play at double resolution, so maybe decreasing that does help. I can't test it right now but I will eventually. Thx for your help
 
albarapa said:
Usually I play in docked so yes ram is at 1600 MHz. I play at double resolution, so maybe decreasing that does help. I can't test it right now but I will eventually. Thx for your help
Click to expand...
Resolution scaling hurts performance a lot, but playing in docked 1x res looks really bad. I’ll look into adding them in when I get a chance.
 
PalindromicBreadLoaf said:
The GPU being the bottleneck is crazy and something I haven't seen before. Especially not at those clocks. I'll do my best to look into it. What res scaling are you using?
Click to expand...
I normally use 2x resolution. I just switched to 1x, and GPU usage dropped; the stuttering disappeared, too.

I wondered if the 1x resolution was the reason I didn't have issues in TICO, so I checked—and it turns out I was using 2x there as well.
 
halibali said:
I normally use 2x resolution. I just switched to 1x, and GPU usage dropped; the stuttering disappeared, too.

I wondered if the 1x resolution was the reason I didn't have issues in TICO, so I checked—and it turns out I was using 2x there as well.
Click to expand...
I'll see if there's anything I can do to reduce GPU load. It's an area I haven't looked much into at all since the CPU is almost always the bottleneck.
 
  • Like
Reactions: ber71

Attachments

  • Screenshot_2026-07-27-14-13-37-553_com.ace.ex.file.manager.jpg
    Screenshot_2026-07-27-14-13-37-553_com.ace.ex.file.manager.jpg
    213.5 KB · Views: 1
  • Screenshot_2026-07-27-14-13-26-568_com.ace.ex.file.manager.jpg
    Screenshot_2026-07-27-14-13-26-568_com.ace.ex.file.manager.jpg
    211 KB · Views: 1

Site & Scene News

Go to forum More news

Popular threads in this forum

Emulation Emulator  NetherSX2 - Switch Port

Dekopon - (Mostly) Fullspeed 3DS Emulation on Nintendo Switch

Emulation Emulator  Cemu - Wii U Emulator - Switch Port

Homebrew Homebrew game  Ultimate Switch Port Thread

Emulation Emulator  DrasticDS Emulator - Switch Port

Homebrew Homebrew game  Angry Birds Classic - Switch Port

Homebrew Homebrew game  Castlevania Symphony of the Night - Switch port

Homebrew Homebrew game  Castle of Illusion - Switch port