Lag renders resource pack selection screen unusable

[AidanLCB]

Describe the bug

Immense lag on the resource packs selection screen.

Steps to Reproduce

Steps to reproduce the behavior:
For me it is as simple as going to the packs screen. It may be worth noting that I have around 2.7gb of texture packs, with many nested folders, and with some of the packs unzipped as for a while my pc had trouble compressing files for some reason.

Expected behavior

I expect to be able to smoothly scroll and select my resource packs, instead of having to wait 10 seconds or so just to scroll one notch.

Environment

Windows 11, with optifine

[TheKodeToad]

Does this happen in vanilla too?
Performance in the pack screen should be better than vanilla.

[AidanLCB]

in vanilla it is fine, however most of my packs don't load as i use folders to organize many of them. in lunar and on feather client they are both fine even with folders though

[mkdrch]

i have same issue

[TheKodeToad]

I know what's causing it now. I already have for a while but the code is easier to appreciate as a meal.