I haven't seen a flood of posts on this, so it's likely something we can address specifically. The Wiki has a guide to Optimizing Roll20 performance . You can start with the suggestions there. Beyond those suggestions, here are some possible solutions: 1) Try a different browser. a lot of users have reported significant performance boosts by switching to Firefox Quantum. 2) Turn off autofill. This can cause a significant lag when trying to edit anything. 3) Although it's mentioned in the wiki article, check the number of characters and pages in your game, especially the characters. They are the biggest contributor to bloat, particularly if you have lots of spellcasters all with completely filled out spells. If none of these things help, could you please carefully work through these steps of our guide to Solving Technical Issues ? Step 1: Make sure to use the right browser Please check if these issues persist when using both Chrome and Firefox. Step 2: Ensure that there are no extensions/addons interfering with Roll20 Please disable all add-ons/extensions and anti-virus programs. Step 3: Clear your cache If none of the above succeeds, please thoroughly work through Step 4 . (Don't forget the complete Console Log!) Thank you!