Try more aggressive pads.
I've been running Carbotech XP10's on otherwise stock hardware with Motul RBF600 since I roasted the stock ones on my second track day, I haven't been able to fade them, but I'm not terribly quick. This is stock springs, dampers, with some camber added up front, 215 wide ZIISS on stock wheels.
Thunderhill E&W, w/ cyclone, T7W-T10W bypass, ~3:55 which is probably a 4:05+ minute lap on the true Thill full course, probably a good 10s off a fast driver, but I know I left a ton on the table, wasn't trying to set any records that day
Laguna Seca is a better benchmark for me, the two days I went after frying the OE pads I was able to hammer out a lot of 1:54-1:56 laps without a hint of fade, traffic providing of course.
Edit: I never tracked Laguna with more camber up front, only tires and brake pads/fluid.
And I didn't like the XP10's for the street too loud, I couldn't keep them bedded in and quiet, but swapping back and forth is relatively minor inconvenience for 3-4x per year imo.
No regrets jumping from stock to XP10's, CSG claims they're beginner friendly and aside from the noise I don't see any downsides (other than cost at nearly $400 a set).