I don't think anyone knows for sure. We do know that membership has at least doubled and that's put a strain on the servers. We also know that internet traffic everywhere is up and that can also cause problems. There are a few things you can do on your end though. Worth checking out anyway...
https://support.chess.com/article/213-how-do-i-fix-my-disconnect-lag-issues
Summer vacation may be a reason for doubled membership so it becomes unsurprising that servers don't function as usual. I've tried some of methods from your link but it still seems to be less-effective. Maybe the only thing I can do is to wait till the end of summer vacation——end of Aug. or beginning of Spet. , before me coming back to start a game. Thank you baddogno.
Sorry I couldn't help more. Pretty sure I read something about external websites being filtered by your government which also slows everything down. Alas I don't have a source or a link....Anyone know more about that?
Whenever I try to go back to previous move and play another move, it says that i can't go to the previous move.
Summer vacation may be a reason for doubled membership so it becomes unsurprising that servers don't function as usual. I've tried some of methods from your link but it still seems to be less-effective. Maybe the only thing I can do is to wait till the end of summer vacation——end of Aug. or beginning of Spet. , before me coming back to start a game. Thank you baddogno.
It's actually not summertime that's causing this. If I'm not mistaken, it's a combination of COVID and the Queen's Gambit! (Well, mostly COVID 
).
I don't believe that there is a true solution to this problem. I guess some games are just really laggy, while others aren't. Maybe there are some days when the server is more glitchy? Hope someone else knows how to help you, my apologies!
Playing with friend is not possible. Match starts with pieces already taken.
I was playing with a bot
This is really disappointing and pretty much unacceptable when you’re a paid up member. Server connection today has been very poor (my connection is excellent).. a really good game where I was ahead collapsed and I was first told the other player had won..then the game mysteriously reappeared! It indicated the other player was about to auto resign and when the clock ran out..nothing happened!! After a further 10 minutes or so an abandoned game was declared…chaos 😒😒😒😡
This is really disappointing and pretty much unacceptable when you’re a paid up member. Server connection today has been very poor (my connection is excellent).. a really good game where I was ahead collapsed and I was first told the other player had won..then the game mysteriously reappeared! It indicated the other player was about to auto resign and when the clock ran out..nothing happened!! After a further 10 minutes or so an abandoned game was declared…chaos 😒😒😒😡
The site is experiencing very high loads, traffic doubling in a couple of weeks and being sustained during peak times. Staff are actively working on optimizations and capacity increases to alleviate issues, handle current load, and be ready for further growth.
https://www.chess.com/blog/CHESScom/chess-is-booming-and-our-servers-are-struggling
This is really disappointing and pretty much unacceptable when you’re a paid up member. Server connection today has been very poor (my connection is excellent).. a really good game where I was ahead collapsed and I was first told the other player had won..then the game mysteriously reappeared! It indicated the other player was about to auto resign and when the clock ran out..nothing happened!! After a further 10 minutes or so an abandoned game was declared…chaos 😒😒😒😡
That's why I decided not to purchase any premium on this website. I'm still a free-of-charge player today.
Lag can happen for many reasons. For some things under your control check out:
https://support.chess.com/article/213-how-do-i-fix-my-disconnect-lag-issues
https://support.chess.com/article/4720-online-chess-performance-optimizations
Having the same problem with 5 minute games. Does seem that time of day comes into the equation but unfortunately it appears to be worse in evenings (UK).
Unplayable at the momment
Having the same problem with 5 minute games. Does seem that time of day comes into the equation but unfortunately it appears to be worse in evenings (UK).
Unplayable at the momment
As far as I'm aware there haven't been any major issues today.
Just had it again. Sometimes during the game but it always appears to happen in the dieing minute or so of the game.
Is there extra processing going on during the end game?
OK
Changed Board
Switched off Analysis
Appears to be much better, will have to see rest of the week
Recently when I am playing a game, especially a 4pc game, the server always loses connection for several minutes, ending in me losing the whole game for forfeit on time. These days this problem becomes so severe that I cannot even finish a game normally. I just want to know why things happen like that,. Whether it's a server's problem or local web's? And how can I solve it? Thanks for answering.