List chain during attack high CPU usage

[Brskt <contact@xxxxxxxx>]

Hello,

I'm using some filter which uses sets with meters. When the server is 
receiving a lot of packets per seconds (~800k+) and using the command to 
list the chain, it does take ~80% of CPU and take a long time to return 
an output.

# cat /etc/issue
Welcome to Alpine Linux 3.16

# nft -v
nftables v1.0.5 (Lester Gooch #4)

# uname -r
5.15.62-1-lts