To Restate :
When we open a page (any one will do) from Chess.com the text and graphics information, but not the graphics files themselves come from chess.com. The graphics files, incl. the pieces most of the times, and such are dl'ed from another server much closer to us geographically, in order to shorten dl times as much as possible, and to minimize traffic on the main servers. These secondary servers are there only to hold and dl graphics files. When they misbehave, we see screwed up screens.
Clearing caches and such are not bad things to do, but they will not fix this problem.
The browser will attempt to locate files from local cache first and if there's a problem there and the browser does not request the assets due to that, a cache clear can help.
To Restate :
When we open a page (any one will do) from Chess.com the text and graphics information, but not the graphics files themselves come from chess.com. The graphics files, incl. the pieces most of the times, and such are dl'ed from another server much closer to us geographically, in order to shorten dl times as much as possible, and to minimize traffic on the main servers. These secondary servers are there only to hold and dl graphics files. When they misbehave, we see screwed up screens.
Clearing caches and such are not bad things to do, but they will not fix this problem.