Most of these steps are only particularly helpful on the lower end computer but could help clear the cobwebs in any intensive I/O situation (lotta data reading and writing to your computer through browser). Quit Browser (let it close entirely). Then shut down computer. Start up computer (without auto-loading previous windows/tabs). Close any background process things that automatically loaded on startup (like your music player, cloud storage, Steam, etc). Start up a clean browser (without loading and then closing or not closing a bunch of other tabs). Only open Roll20. Open as few other reference tabs on this machine as possible during the session. (Look up other websites / books, on your phone/tablet instead). When something changes in Roll20, let it load completely before you click-around and click-and-drag and type and issue more commands. Let pages load (first blurry, then sharp). Offload Discord to a secondary device (do voice using your smartphone, tablet, second laptop, epc, instead of computer running Roll20 also). Ask GM to delete or store (Character Vault) any extraneous / unnecessary Character Journals that could be adding a lot of attributes (such as sheets for past NPC's, dead Characters of olde, or tons of Monsters imported into the game when most of them won't be needed for the upcoming sessions). Don't zoom in & out, willy nilly. If you choose a new zoom level, let it load fully before panning or zooming again. Also, Read Wiki docs, <a href="https://wiki.roll20.net/Optimizing_Roll20_Performa" rel="nofollow">https://wiki.roll20.net/Optimizing_Roll20_Performa</a>...