Terrible FPS and loss of responsiveness

This is probably not an issue most people encounter, but me and my players experienced horrible fps/lag last time we played. We played on this map and all of us noticed that moving or selecting tokens took around half a second each time. Now, im trying to figure out why this happened. The map is of quite large resolution, that could be one thing. The problem does not arise on smaller maps, as far as i've noticed and tested. EDIT: Also, the gratuitous amount of freehand-drawn dynamic lighting borders could have something to do with it. If so, what is the recommended way to draw them? Snap to grid? The problem occurs on all my players, but differs between Firefox and Chrome. In Chrome, There is the afforementioned lag, 0.5 - 1 sec delays in selecting and moving tokens. In Firefox, the lag is less noticable (<0.5 sec delay), but after a while the display locks up, i.e. the view doesnt update the screen when scrolling the map, or moving tokens. The scrollbars update, but not the map. Restarting Firefox solves the issue temporarily. I guess my main question is: What is the upper recommended limit on imported image resolutions in Roll20?

Frej B. said: This is probably not an issue most people encounter, but me and my players experienced horrible fps/lag last time we played. We played on this map and all of us noticed that moving or selecting tokens took around half a second each time. EDIT: Also, the gratuitous amount of freehand-drawn dynamic lighting borders could have something to do with it. If so, what is the recommended way to draw them? Snap to grid? That bolded section causes the main lag problems. It is noted that freehand dynamic lighting is a memory hog and the work around is not to use freehand but polyline dynamics. The secondary problem that is usually associated with the resolution of maps. The higher the dpi the more memory it uses then when you combine the two it causes severe lag with the computer's video card. That is why you click on something to move it and it seems to lag. I don't remember what the recommended dpi should be but if you redo the dynamic lighting with the polylines you should get better results.

I thought dpi was the resolution and the X by Y was the dimensions and that effect lag more? Learn something new everyday.

/me Pats On Pat S's shoulder. That was apparently it. :D I deleted everything on that layer and it stopped lagging at once. Thanks for the help!

You're welcomed and glad it cleared up for you.