[Bug] Mario Kart 8 Deluxe Crashes When Opened Only The First Time

[FragileDeviations]

Prerequisites

• I am confident that my issue has not been reported already in open OR closed issues.
• I am able to reliably reproduce the issue on the latest stable or canary version.
• I am not using an unofficial build (Flatpak, Emudeck, etc.).
• I am a silly goose and didn't read these boxes.
• I am a silly goose and DID read these boxes.

Description of the issue

When opening Mario Kart 8: Deluxe, the game will crash, but the next time you open it, it opens fine. It has a cooldown period too???? It won't crash on startup for a while once it's crashed once, but then later on it will crash again. I haven't been able to find a specific trigger that makes it crash on first launch again.
Looking at the logs, it seems related to Miis. But Miis end up working perfectly fine in game once it's opened again after the first crash.

Reproduction steps

1. Open Mario Kart 8 Deluxe
2. Crash
3. Open Mario Kart 8 Deluxe again
4. No crash

Log file

Ryujinx_Canary_1.3.277_2026-04-30_02-37-09.log

OS

Windows 11

Ryujinx version

1.3.277

Game version

3.0.4

CPU

Ryzen 7 5800X3D

GPU

NVIDIA RTX 5060 Ti

RAM

64GB

List of applied mods

Balancing Unshittifier (Personal mod, happens without the mod too)

Additional context?

No response

[GreemDev]

stop using custom miis

[FragileDeviations]

That doesn't fix anything though?
It crashes loading the default miis too, but only the first time

[GreemDev]

this crash is caused by using miis generated by ryujinx. stop using miis and it stops crashing

[FragileDeviations]

happens regardless if custom miis exist or not, crashes once then doesnt crash the next time its opened
same exact error

[FragileDeviations]

apparently there was still some remnant of custom miis somewhere, manually deleted files related to stored miis and no longer happens
Also no longer happens if I import my switch's miis using a homebrew software for importing/exporting miis directly from a Switch, so yea it is the way ryujinx generates miis

[FragileDeviations]

I've found a fairly consistent way to get MK to crash again, so should be a bit easier for me to test
Gonna remake my mii so its no longer using my actual switch's mii data rq

[FragileDeviations]

Yeah doesn't seem to be crashing anymore, added a couple extra miis too so it'd have to load more mii data and no crash

[FragileDeviations]

The mii cleaning is an annoying process, the PR fixes it without having to do the whole process of dumping miis off a switch then importing into ryujinx using MiiPort