High Ping Latency and Packet Loss

Hello i am uncertain anymore who to reach about this issue . As of last week there was an outage after the outage was resloved ive had non stop ping issues . a new modem was issued to me and i am still having the same issues. I am a gamer/ streamer and i need a stable connection . My internet downlod and upload speeds are unaffected by this packet loss and ping . I have tried contacting via phone and messenger and cant get passed the automated system that just wants to reset my modem .