> My situation is different - I'm a game developer
> Do you know any of such workarounds? Is this the right forum to ask?
I don't think many users live here with the level of expertise you require.

It's above our heads. Anyway, if the solution requires adjusting PCI
latency timer or such, there are no software workarounds. These options can
only be fiddled with via the BIOS interface (at least in a safe way, since
different chipsets work differently).
You could ask Creative directly, surely they have a developer support
program, or write the KX Project guys an email (they have the source code
for their driver available too I believe, in case you want to reverse
engineer it and maybe find a solution).