Drespar said: CrazyGambler , Austin , TheWebCoder , DungeonMaster Performance is something that is definitely on our minds, and we will continue to improve upon it as time goes on! Something to keep in mind, is that lag will mostly be on the GMs side, players should experience relatively little. Are these larger games? That might be another potential cause for the symptoms you are seeing. That said, I would recommend possibly clearing your chat archive, especially in long running games, to see if that eliminates some of the slow down. You can find info on that and more here: https://wiki.roll20.net/Text_Chat#Chat_Archives
You might also try working through our Solving Techinical Issues wiki page to see if that might help out :) Edit: Also, if you check "Only Update on Drop" in the Dynamic Lighting section, it should bump up performance a little! I took all of these steps. Clearing the chat log helped a bit , but it's still god-awful slow. I haven't had my players chime in yet, but for me as the GM it's so slow I wouldn't use it. Again, very buff computer, graphics card, plenty of memory, latest Chrome in incognito mode which disables all extensions, no Roll20 chat enabled, so if it ain't workin on this computer it's going to be a fairly prolific issue. When you solve performance, this will be the coolest feature in a while. Have at thee, Roll20!