Dynamic Lighting is awesome, but it is killing my computer

I was eager to take a look at the new Dynamic Lighting feature, and while I found it was easy to use, it slowed the hell out of Roll20 and got progressively worse the more tokens on the board generating light. I tried using it for the 1st time yesterday and had to stop after about 5 minutes. It was taking more than 10 seconds for Roll20 to even respond to me doing anything, such as scrolling the screen or clicking a token. Does anyone have any ideas about what I might do to try and fix it, or is it just beyond my computer's power?

I had the same issue. I was asked to use the poly line tool, rather than the hand drawing tool, and it worked. The amount of calculation time goes up a lot with the hand drawing tool. Try that out. 

^This serves multiple uses. IE the player can't "Scan" the board with his token :P (I had one admit to trying lol)

I will admit I was using the freehand tool somewhat since I was using a cave map and was having difficulty using the polygon tool on the ever-changing cave walls. I will attempt that and see what happens. I will also look into the Only Update on Drop option. Riley D. said: Also keep in mind that it's much harder on the system to have a lot of light generators than it is to have a lot of walls.  And just to confirm, there should be a sort-of "fallback" mode that gets triggered if it's taking your computer too long to render the DL where it only renders when you stop scrolling...is that not happening for you? Yes, the system stopped rendering while I scrolled after a while, but I don't think it had an appreciable effect on the tokens. My biggest issue was that I would click on a token and it would take about 10 seconds to pull up the token menu so I could edit health and conditions. That being said, I want to say I just recently subscribed after running a test campaigns on Roll20 and fell in love with the system. It's saving my college gaming group that was falling apart as everyone graduated. I wanted to thank you guys for that. I'd be a mentor level subscriber if I wasn't a broke college grad hunting for a job.

Anytime. I've been telling everyone and anyone who will listen about this site.

Delete all of your freehand drawings and use the poly tool. Really that free hand tool needs to get removed from the DL layer.

the poly tool can do everything the freehand does and uses a fraction of the resources. I've used it to outline buildings, rooms, caves, everything and I have not had a problem. I have more problems with all the tokens I use more then I do with the dynamic lighting.

Please disable the freehand tool. I have DM's that use it and it soooooo bogs down after a few light sources. I too have had the problems with tokens taking forever to pop up their bubbles when dynamic lighting is used with the freehand tool. If all I use is the poly tool... I can have dozens and dozens of tokens with light sources active and there's hardly any lag. Once the freehand tool is used however, it drastically lags out the tokens very quickly.

I remember someone mentioning that the free hand tool creates thousands of little marks that has to be computed each time the screen or a token is moved. you create a lot of DL walls with that tool and you have a serious lag monster. The poly tool makes it one complete line and reduces the computing big time. I can use that poly tool to outline a jagged cave wall better than I coud with the freehand and not worry about light cracks showing through the walls.

Thanks for the suggestions guys, I will do a test run using the poly-line and see if that works and will report back if that fixes the problem.