What browser?
Also, check out the following that may help some.
https://support.chess.com/customer/en/portal/articles/1444918-my-internet-connection-is-fine---why-am-i-getting-disconnects-
It's about disconnects but some of the other suggestions can assist with other issues of lag.
Hope you can help me decide? I am using a Dell lap top computer, I know that's old fashion, it's window's 10. I am having this problem, when on chess.com, is when I only seem to have this problem, I even gave up my diamond membership, because no support from chess.com.
So when I am on chess.com periodically my computer freezes up on me, then 20-30 seconds later a message appears at the bottom of the page, "restore web page". Also when I am typing a message, the letters do not appear at the moment I type, but shows up eventually. Things work at slow motion most of the time. What's going on here?? I have been a member since 2010, and had two other computers in that time and never had a problem with being on Chess.com. So if no one here is experiencing this issue it must be my computer, that is all I am trying to find out. I even purchased CCleaner, that did not make a difference. Thanks for any opinions!!