Always slower than coc

[xzbdmw]

FAQ

• [X] I have checked the FAQ and it didn't resolve my problem.

Announcement

• [X] I have checked Breaking change announcement.

Minimal reproducible full config

1. enable coc and cmp
2. set

           performance = {
               debounce = 0,
               throttle = 0,
               fetching_timeout = 500,
               confirm_resolve_timeout = 80,
               async_budget = 1,
               max_view_entries = 200,
           },

Description

start typing, you will see coc's floating windows always show up first as in screenshot, and the response time is unpredictable each time, sometimes faster, somtimes slower as a repeat "del"v"del"v key sequence.

https://github.com/hrsh7th/nvim-cmp/assets/97848247/a3b5bf5c-d120-4e2a-bc86-9373e42b54b0

another example using volar

https://github.com/hrsh7th/nvim-cmp/assets/97848247/6be468f9-db02-4fb2-80a3-7497038e1893

Steps to reproduce

use coc default config and cmp max performance config

Expected behavior

they should be the same

Actual behavior

cmp always slower

Additional context

No response