I am a tenant in a shared house at the moment and right now the internet connection is quite unstable for gaming and others, especially at night around 7 pm to 12 am. I can get around 400-700 ping playing in pF ZE server sometimes while in other times, normal 200-250. I complained to the landlord but he is rather skeptical and said it's probably because the connection is shared among 7 users, especially at night when the housemates come home from work and study! I cannot contact the ISP directly because I am not the account holder. Landlord said that if I'm still having problems after 1 week, then he would call the ISP and see if the problem is on their end. While waiting for that 1 week mark, I would like to see if fellow pF members can say anything about it. Both of us are not good at networking or IT, so for now, it's getting a bit desperate. A guy told me to check if my housemates are indeed hogging the bandwidth by looking at net_graph 4 in CS:S and check for choke and loss. Both showed 0 all the time while it was around 500-700 ping in ZE and he said that housemates are not hogging and said choke is sometimes coming from the server-side not client-side but it's still worth checking. Questions: 1. Is there another way to check whether the high ping issue is caused by housemates hogging bandwidth or not? How to do that? 2. If it's indeed caused by housemates hogging bandwidth, is there a way to fix the problem without severely disrupting housemates' services? I've been reading about this thing called IP QoS setting where you can make your connection as top priority for traffic in a shared connection. However, I'm not sure if I want to do that. 3. If it's not caused by housemates hogging bandwidth, what are the steps that I can take to check and fix the problem without contacting the ISP?