I made the decision to upgrade my BIOS version from version 337 to 340 since it popped up on GH. After the BIOS update, I noticed that my laptop is just hogging unnecessary power (around 2h30 on eco mode with any luck), even with the CPU on idle (ThrottleStop reports C0% under 1% at times). The issue seems to stem from secondary NVMe SSD installed on my device (which didn't seem to bug anything before the BIOS update), making the SoC never reach under C2 state. This issue only goes away when disabling the SSD from device manager and by suspending the laptop (which is hit or miss).
I also noticed that the laptop thinks a lot before effectively suspending; it seems it tries to shut everything down and doesn't succeed (disk LED blinks for almost half a minute). The PCIe lane seems to stay always on even during sleep, and a single nudge on the mouse or keypress is not able to wake the laptop. I need to spam press the keyboard or mouse to wake it up.
I tried to downgrade the BIOS even though knowing it wouldn't allow me to do so (even with the ASUS Winflash utility allowing me), but the EZ flash just refuses any binary, newer or older.
Everything is updated to latest version, no ASUS processes running on background as well and barely any bloat as well.
Does someone hava this problem using this BIOS version? I have another identical laptop on BIOS 332 and doesn't have the same battery life issues as mine, runs 5h with barely any throttling applied.
Hardware: Intel Core 5 210H, 24GB RAM, RTX4050, 1.5TB (500GB Micron, 1TB Kingston NV2) drive
Software: Windows 11 25H2, GHelper, light debloat (CTTool used, nothing at ACPI level stuff debloat)