Hi,

my umbraco site runs on 7.5.9 and till last week, I had no problem using the grid. Our system is mainly based on the grid and we have a lot of macros (most of them does not render within the grid) for our customers.

Now we have the problem, that some browsers crashed when the grid gets loaded . Not directly, but after a while. I can reproduce it when I change between some nodes, that render the grid, back and forward.

No error in the Javascript console and also no error in Visual Studio if I run it locally. Also no error message in the trace log.

All I could find out is the following:

It happens in the chrome browser Version 56 32 bit ( in Version 55 64bit, it is only very slow, but did not crash).

Also happend in FF and Edge.

Error: the whole tab freezes, "Page does not response" comes up.

In the network traffic, there is no special request, when the crash happens. Sometimes, requests are pending when it crashes, sometimes, all requests are done and it hungs up.

I have a lot of nodes in this instance. When I log in with a user that start on a lower level of this nodes, the crash does not happen.

I guess there is a strange Javascript-Error, causes kind of endless loops or something like that together with this lots of subnodes (about 3.000).

Has anyone experienced a simular problem or might have an idea how I could get rid of this strange behavior?

Thanks for help.

Tom