Client lag

So a friend of mine was complaining about his client being laggy randomly and we thought it was a PC issue. He restarted his PC and joined my party an now I have client lag. It seems that whomever is hosting a party can receive client lag. I get to declare champion at 14 seconds, there is a huge delay using the search option for finding a champ which makes picking and banning much more stressful. When someone types in chat during champ select it first shows there name as .... before it fills out properly. This does not affect gameplay only during the client while hosting the party but EVERYTHING has a delay when trying to use. Any ideas? or anyone else experiencing this issue?