Windows 10: Dell g5 5587 becomes laggy as hell on battery (issue began after update to 2004)

Specs are: i5-8300h, 16 gb ddr4 ram.
WHen i unplug laptop - i can't even properly watch 480p youtube videos - i get constant framedrops. And battery settings (high perf. or battery saver) give the same performance drops, but in high performance i get kinda worse battery life. On 1909 i have never faced this issue. And i even didn't change any battery/power settings since upgrade. It's definitely software problem, as i also have hackintosh installed on this laptop, but i don't have these issues on MacOS.

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:)

 

I got a new laptop dell g5 5587 no WiFi option in the 1st. setup

I got a new laptop dell g5 5587 no WiFi option in the 1st. setup when cortana say lets connected to internet,
only the option is connect through ethernet cable. Any one got this issue or is that normal ?

There is no this option only ethernet

 

Dell G5 5587 Intel Core i7 8750H throttling

I have a problem with my laptop Dell G5 5587 and its CPU Intel Core i7 8750H.
I have bought this laptop in December last year and since then I've encountered a power throttling on CPU (more specifically, PL1 limit), despite this being a 'Gaming laptop'.

The symptom is as follows: when gaming, or doing any other CPU+GPU intensive task, the laptop decides to lower Power Limit to 15W from standard 45W and the CPU throttles to 0.8 GHz from 4.0GHz on Turbo.

The configuration is the following:

• Dell G5 5587 chassis
  
• Intel Core i7 8750H 6x2.2GHz (up to 4.2 GHz)
  
• 16 GB DDR4-2666 RAM
  
• NVIDIA GeForce GTX1060 Max-Q Design with 6 GB VRAM
  
• Toshiba 512GB M2 SSD
  
• Samsung 860 EVO 1TB SSD
  
• 15.6" 4K HDR screen
  
• Windows 10 x64 Enterprise Insider Preview Version 20H1 Build 18865 + Ubuntu 18.04 LTS
  

I have tried everything, including what I've found on the Internet:

• Update BIOS (several times, it came with v.1.5.1, I'm now on v.1.9.0)
  
• Update drivers (all of them)
  
• Update Windows (obviously) and all the software I have
  
• Followed several guides for this particular CPU, including undervolting the CPU and cache, as well as reducing Turbo boost speeds
  
• Removed Intel DPTF following this guide Removing Intel DPTF for good
  
• Disabled Turbo Boost
  
• Contacted Dell Support, which turned out to be pointless, as I had to spend around a week to explain to them the problem, and that I'm not stupid and I have all the updates. I provided them with log files to show the behavior of the system
  
• Installed Dell Power Manager and set cooling to Ultra-Performance
  

As you can see, I've reached an impasse and I was wondering maybe the respected community of Stack Exchange could help me out
I haven't done extensive testing under Linux, though, but I don't remember anything like this happening there. So this seems to be particularly Windows problem.

Only other choice I have left is to wait for 9th Gen Intel CPUs to come out and exchange the laptop under warranty.

EDIT
I'm using Windows 10 x64 Enterprise Insider Preview Version 20H1 Build 18865 (obviously updated more than dozen of times already)

UPDATE 1:
As recommended in comments, I have enabled the Ultimate Performance battery mode, but it didn't help either.
I have also followed this Guide to prevent PL1 limit from changing. But it didn't help either.

 

I got a new laptop dell g5 5587 no WiFi option in the 1st. setup

Ok ill try, some one told me u must install the NVIDIA drive from NVIDIA.com like this:






Not from dell support and really i installed it at the 1st. time from dell support drivers and the control panel not working
what's your opinion ?