Retroachievements on RetroArch for 3DS causes massive stutters

First and foremost consider this:

• Only RetroArch bugs should be filed here. Not core bugs or game bugs
• This is not a forum or a help section, this is strictly developer oriented

Description

I'm using retroarch 1.19.1 on my New 3DS and there is a performance degradation when I enable retroachievements, even for gameboy games.
I followed the documentation and removed all cores not being used and that improved loading times but retroachievements are still causing a big impact on performance. Seems to be caching something for the first few minutes and then stabilizes, but if an achievement is going to trigger, there's a lot of stutters.

The 3DS is not a powerful device, but maybe resources are being overused for processing retroachievements.

Expected behavior

No stutters

Actual behavior

Lots of stutters

Steps to reproduce the bug

1. Install RetroArch on 3DS
2. Add games
3. Enable retroachievements
4. Start a game compatible with retroachievements
5. Massive stutters will be present or game will freeze for several minutes
6. (if retroachievements are disabled, game does not freeze or stutter)

Bisect Results

N/A

Version/Commit

You can find this information under Information/System Information

• RetroArch: 1.19.1

Environment information

• OS: New Nintendo 3DS
• Compiler: N/A

No source files, tests, or entry points are named. Start by reproducing the issue on a New Nintendo 3DS with RetroArch 1.19.1, comparing gameplay with RetroAchievements enabled and disabled; completion means identifying and addressing the cause of the freezes and stutters during achievement processing.