When I am on a map for a couple of minutes (roughly 10 or so), the dynamic lighting goes away then I can't scroll or zoom on the map. The map scrolls but nothing outside my previous view loads. If I zoom the number goes up and down but I don't actually zoom. The first time everything went fubar the entire map layer and gm layer flickered continuously until I reloaded and I was stuck on the loading screen. I used a link in my bookmarks to just reload and the map and everything on it was gray. I couldn't see anything just a gray image with no detail. I closed the tab a loaded back in and after a while, the dynamic shadows when away and I couldn't pan or zoom the map. I have used legacy lighting and the new dynamic light and the same thing happens after a few minutes. If I reload the screen I am stuck on the loading screen. I have to close the tab then load back in. And the time between is getting shorter. I am using Firefox as my browser.