[jitsi-users] Big memory usage - limit users avatars size?

recently I added LDAP synchronization to my openfire server. Firstly I did
it it without synchronizing avatars and then decided to add those too. Once
I added avatars my memory usage on client side jumped 170MB once the user
logs in. Is there a way to limit size of avatars that Jitsi pulls down? I
would be glad to hear any kind of performance trick.