[Bug] Custom Skin Loader + Flashback mod = rendering speed drops many times

[Quanzy049]

Describe the bug

If CustomSkinLoader installed, rendering in Flashback mod is very slow. Without CustomSkinLoader it in many times faster

Steps to reproduce

1. Install CustomSkinLoader and Flashback mod
2. Replay something
3. Start rendering this replay

Link to crash-report if applicable

No response

Link to CustomSkinLoader.log if applicable

https://mclo.gs/jpIPywV

Link to latest.log if applicable

https://mclo.gs/1MQAtFi

[Only Forge User] Link to Forge Log if applicable

No response

Mod Version

14.21.2

Minecraft Version

1.21.1

Minecraft Launcher Name and Version

No response

Mod Loader

Fabric

Operating System

Windows

Before submitting a bug report

• This bug wasn't already reported (I have searched bug reports on GitHub).

• This is a valid bug (I am able to reproduce this on the latest dev build).

• This problem is triggered in the latest version of the mod (if not the latest please upgrade the mod first)