Stabilize sub-tick server routing, protect your home IP from sore loser DDoS floods, and bypass strict skill-based matchmaking (SBMM).
Connect to regions where the local time is 4 AM - 8 AM (e.g., Singapore, South Africa, or Hawaii). Because player pool sizes are smaller, matchmaking algorithms loosen strict ELO/KD filters, putting you into significantly more casual 'bot' lobbies.