I've been experiencing this for quite some time, but it's rare enough that it doesn't bother me. It seems to me more like a problem with a database or something. E.g. I click 2-3 times in a row on Bl gp XRR charts and it times out every time. Then I click on FZR, loads fine, FXR fine, then again XRR - times out. Like there's something on that particular page that's causing it. It's not related to track/car combos either, sometimes it can be a specific page for a certain combo, MHR or nutter rank. Like page 3 for some chart times out, and all others for the same chart don't. It rarely happens though, like a few times a month. I use FF too.