Yesterday Dell replaced the motherboard in my device. Right after the replacement, I launched Windows and got the same 20W PL1. Also, Windows automatically initiated the BIOS upgrade procedure through Windows update to 1.10.0. During the upgrade, all the firmware parts (including EC, ME, Thunderbolt controllers, etc.) were updated. This process took longer than usual. Right after the BIOS upgrade, I decided to enter the BIOS settings, make a factory reset, and switch power modes from Optimized to Ultra-Performance and again to Optimized.  I've noticed that this time fans started to spin faster once I selected the Ultra-Performance mode. That was a good sign. But once I loaded it into Windows, I got the same 20W PL1. I decided to try installing the fresh 22H2 version with all the drivers but without any Dell software (including Power Management service). After installation, Windows installed a weird update with Dell firmware with version 1.9.0. The laptop BIOS version is still 1.10.0, but in the Device Manager I see "System Firmware 1.9.0". Before the Windows reinstallation, there was a device called "System Firmware 1.10.0". The behavior of the PL1 limit was also changed. Now it is very dynamic. Under sustained load, it is settled to 45W, but during burst or combined loads, it changes from 30 to 75W. Summary: 1. It looks like this issue was caused by the configuration issues between BIOS, Windows, and virtual devices like "System Firmware 1.10.0"; 2. I don't think it is caused by drivers, because I've installed the same versions as I had before; 3. Motherboard replacement might help, but I'm not completely sure.
Hello, I updated BIOS to 1.10.0 on my Dell XPS 17 9720 with Core i9 12900HK and noticed severe performance issues. The performance under sustained load decreased by 40%. I did some research and found that the PL1 power limit dropped from 45/55W to 20W. The PL2 limit is the same - 115W. As a result, the CPU is limited to 20W Total Package Power after a few dozen seconds and drops performance significantly. Before the update, it was limited to the nominal TDP of 45W (Optimized) and 55W (Ultra Performance) I've tried rolling back BIOS to 1.9.0, but it did not help. Other things I've tried:- Reset BIOS settings (both Factory and BIOS Defaults)- Reinstall all the drivers for Intel devices from the Dell website- Reinstall and uninstall Dell Power Manager app and service- Change power plans in Windows 11 settings- Switch the power mode in the Dell Power Manager and BIOS to Optimized and Ultra Performance- Stop/Start the Intel(R) Dynamic Tuning Technology Telemetry Service- Loading Windows 11 in the Safe Mode. The issue still persists there as well- Tried connecting the original Dell 130W power supply to the different port None of those things did not help. The CPU is still limited to 20W and does not perform as it should. How can I solve this issue? Thank you!
Severe performance issues on XPS 17 9720 after updating BIOS from 1.9.0 to 
1.10.0