Config for Transmission. Optimized for Raspberry Pi. Do not forget to change password, paths and maybe other parameters.

settings.json

{
    "alt-speed-down": 50, 
    "alt-speed-enabled": false, 
    "alt-speed-time-begin": 540, 
    "alt-speed-time-day": 127, 
    "alt-speed-time-enabled": false, 
    "alt-speed-time-end": 1020, 
    "alt-speed-up": 50, 
    "bind-address-ipv4": "0.0.0.0", 
    "bind-address-ipv6": "::", 
    "blocklist-enabled": false, 
    "blocklist-url": "http://www.example.com/blocklist", 
    "cache-size-mb": 1, 
    "dht-enabled": false, 
    "download-dir": "/media/flash/torrent", 
    "download-limit": 5000, 
    "download-limit-enabled": 0, 
    "download-queue-enabled": true, 
    "download-queue-size": 1, 
    "encryption": 0, 
    "idle-seeding-limit": 30, 
    "idle-seeding-limit-enabled": false, 
    "incomplete-dir": "/media/flash/torrent/.tmp", 
    "incomplete-dir-enabled": true, 
    "lpd-enabled": false, 
    "max-peers-global": 200, 
    "message-level": 2, 
    "peer-congestion-algorithm": "", 
    "peer-limit-global": 10, 
    "peer-limit-per-torrent": 5, 
    "peer-port": 65500, 
    "peer-port-random-high": 65535, 
    "peer-port-random-low": 49152, 
    "peer-port-random-on-start": false, 
    "peer-socket-tos": "default", 
    "pex-enabled": true, 
    "port-forwarding-enabled": false, 
    "preallocation": 0, 
    "prefetch-enabled": 0, 
    "queue-stalled-enabled": true, 
    "queue-stalled-minutes": 30, 
    "ratio-limit": 2, 
    "ratio-limit-enabled": true, 
    "rename-partial-files": true, 
    "rpc-authentication-required": true, 
    "rpc-bind-address": "0.0.0.0", 
    "rpc-enabled": true, 
    "rpc-password": "raspberry", 
    "rpc-port": 9091, 
    "rpc-url": "/transmission/", 
    "rpc-username": "torrent", 
    "rpc-whitelist": "192.168.1.*", 
    "rpc-whitelist-enabled": false, 
    "scrape-paused-torrents-enabled": true, 
    "script-torrent-done-enabled": false, 
    "script-torrent-done-filename": "", 
    "seed-queue-enabled": false, 
    "seed-queue-size": 10, 
    "speed-limit-down": 100, 
    "speed-limit-down-enabled": false, 
    "speed-limit-up": 100, 
    "speed-limit-up-enabled": false, 
    "start-added-torrents": true, 
    "trash-original-torrent-files": true, 
    "umask": 18, 
    "upload-limit": 100, 
    "upload-limit-enabled": 0, 
    "upload-slots-per-torrent": 14, 
    "utp-enabled": true
}