[3DS] Cores running very slow on current builds (2024-03-11 and stable)

Description

All tested cores seem to run similarily slow, regardless of required computing power. Tested with GBA (Kirbys nightmare in dreamland), SNES (super mario world) and some light PSX games (worms world party main menu, lode runner), also tried different cores for the systems, if available. the sound seems choppy as well.

Expected behavior

Expected to see the cores run smooth with smooth sounds playing

Actual behavior

Laggy video and audio (regardless of how much computing power is required, it feels like it runs slowed down with the sound being choppy to "fit" the video)

Steps to reproduce the bug

1. install current build of retroarch on o3ds
2. install cores
3. load any rom

Version/Commit

You can find this information under Information/System Information

• RetroArch: tried the current stable download on the website and also the nightly build 2024-03-11

Environment information

• OS: newest firmware 3ds on Luma3ds

Additional Question

I read about this being an issue in the past which seemed to get fixed and reoccured. Are there any somewhat recent builds where this shouldn't occur in the meanwhile?

Start by reproducing the laggy video and choppy audio on an o3DS with the current stable and nightly RetroArch builds, using the listed GBA, SNES, and PSX examples. Compare core behavior and system information across builds; done means identifying the cause of the slowdown and confirming smooth video and audio on the affected setup.