Its happen to me and few friends.

Packet loss from 8+ pm to 11.30+.

Few options that you can consider:
- Play after 12 am
- Use VPN i.e WTFast, Killping. Basically need to pay per month.
- Try play at other server. Tried Japan before. Ping 90+, no ping loss.

Best if you check your ping 1st using cmd before start play.

Unifi5 user here