[Thaxll]

As if all problems are reproducable at will on all the different set of software / hardware out there ...

[genewitch]

In theory it ought to be, but since drivers are generally closed source we actually have to test on everything.

[Thaxll]

What I meant is that you don't know the problem until you had it, out of the millions of players you need feedback that something is not working properly, reports / telemetry is a must have. Most serious online games have such mechanism.