Minecraft version - 1.18.2
Mod loader - Forge
Mod version - 1.6.2
I am using the latest version available - Yes

Describe the bug
The attack speed of dual-held weapons is too fast, resulting in FPS reduction

To Reproduce
Steps to reproduce the behavior:

1. The attack speed of the test weapon is 3.36
2. Hold a weapon in both hands and attack

Expected behavior
One-handed attacks do not lead to a reduction in FPS, but two-handed attacks will have this problem

Screenshots or video recordings

Additional context
Add any other context about the problem here.

Forge in general performs much worse than Fabric, also since you have other mods installed it is difficult to tell what is causing the problem.
Are you using Optifine?

No, I use rubidium
About attack speed, I used the affix of Apotheosis

No FPS reduction can be observed when the mod is installed on its own, hence this issue is hardly actionable.

Please provide exact details with the minimum number of mods installed about how to reproduce this.

Oh well... After a few hours of testing, I found that it's not the attack speed that causes the problem, but the dual-wielded weapons with Apotheosis affixes that cause the FPS to decrease.
So this is perhaps a compatibility issue with Apotheosis?

As far as I know the issue has been fixes on the side of Apotheosis.
Feel free to reopen in case the issue resurfaces.