Make your seedbox faster seeding to other peers, follow these settings if you plan to create own seedbox server

VM Specification

Description	Value	Info
vCPU	4 Core	For 1Gbps upload, use 8 Core for 10Gbps
Memory	8192 MiB (8GB)	More is better
OS	Latest Ubuntu	Let OS have own / disk
Storage Pool	SSD/NVMe/RAID-5 SSD	Let qB have own /mnt/torrent

BitTorrent

Description	Value	Unit
Encryption mode	Allow encryption

If you not use VPN, perhaps set to Require encryption

Speed

Uncheck all for Rate Limits Settings

Connection

Description	Value	Unit
Peer connection protocol	TCP

If you have own IPv4 Public Address, do the Port Forward to allow peer connect to you.

If you on CGNAT, please enable IPv6 when available, this will increase chance peer finding.

Uncheck all for Connections Limits

Advanced

Description	Value	Unit
Physical memory (RAM) usage limit	4096
Asynchronous I/O threads	32
Send buffer watermark	8192	KiB
Send buffer low watermark	1024	KiB
Send buffer watermark factor	200	%
Outgoing connections per second	1000

These advanced settings let qBitTorrent promote larger to other peer so it will accept connection right away

Outgoing connections per second

The Outgoing connections per second setting controls how quickly qBitTorrent initiates new connections to peers. This is especially important when starting up or resuming a large number of torrents — a higher rate means faster peer discovery and swarm participation.

Thus, putting 1000 value is better, however you also need update your Linux Limits:

By default, Linux put 1024 limit of number file read, increase to 65536 is suitable for Torrent can make sure of SSD performance! To check, do:

ulimit -n

If return 1024, then you need modify

Edit Limits Configuration

Open

nano /etc/security/limits.conf

Add these line

*       soft    nofile  65535
*       hard    nofile  65535

Look like this

Edit PAM Session Config

Open

nano /etc/pam.d/common-session

Add these line (not replace, just add)

session required                        pam_limits.so

Look like this

Reboot

Once you done, reboot to take effect!