Copying over, what I already said before on the other article, glad it was mentioned and also reported to Dell, I did the same.
On my 9570 with 1.7.0 under Windows, the fans are now coupled to the dGPU 1:1. It wasnt like this before 1.7.0. Anything, which activates the dGPU, even if it just for a brief moment like doing a 1-second poll (like GPUz, or even Windows Task manager), regardless of its temps, activates the fans now for 7-10 seconds. Opening Steam, fans run for 10 seconds, go off. Even better: If I have Steam running in the back, or anything which can poll the dGPU, then go modern standby, wake up, it triggers the fans every single time for 10 seconds. Opening HwInfo... fans kick in for 10 seconds. CLOSING HWINFO... fans kick in for 10 seconds. Opening Nvidia panel... fans kick in for 10 seconds. Closing it... fans run for 10 seconds.
This just happens on AC, not battery it seems.
Opening / closing Edge triggers the fans now too. Same as opening Windows Explorer for the first time, then right click on an exe file (mostly because of the Nvidia dll for the context menu).
Example for Task Manager:
https://www.dropbox.com/s/w9eouyny81ctd9h/dgputriggersfans.mp4?dl=0
Fans/dGPU are off.
Opening Task manager (or other apps who access dGPU).
dGPU is on for half a second.
Fans go on for 7-9 seconds
Closing Task Manager.
dGPU is on for half a second.
Fans go on for 7-9 seconds.
I reverted back to 1.6.0 and that resolved the fan issues again. Flashed back to 1.7.0 and they're present again.
This also means btw, the laptops fans now kick in always you turn it on, this wasnt the case before 1.7.0. They also mostly spin if it wakes up from modern standby (and a dGPU poll app is open, like Steam).
This is UNACCEPTABLE. The fans need to be turned on JUST temperature related, not something bogus reason like an activation. The fans were always terrible on the XPS line (2 second spins randomly), or if the CPU jumps for a brief moment over 50°C they spin for a few seconds, then go off again... but now it is just terrible.