Interestingly, I'm having a similar heat up issue at the moment as well... although namely on the rear of the car. Been running an adaption of Steen's ETS setup, and it just doesn't have enough rear grip in lower traction.
Given we've been spec'd to run a tyre that takes a while to warm up and hold onto temp, (the chrips die down after a few mins!), is proving tricky to hang onto.
To support Mark's point, the biggest change I made this weekend was to tyre prep, simply going from FX2 to LRP Carpet 2 (On asphalt, go figure..), and instantly car was now driveable and more locked down. So don't ever overlook that aspect, after all, those 4 black round things are the only contact with the ground (unless your like me and on your roof... then it's game over
)
Ran out of time to test more this weekend, but by generally making the car softer did seem to help, as did more droop. But the balance was still off, with the rear being very lively, so need to work on that next time out (I think it's a front too soft/rear too hard combo). Setup attached regardless!
Regards
Ed