Last reply by 02-08-2020 Unsolved
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XPS 15-9570, performance has tanked

Hi Alan,

I have been troubleshooting poor performance on an XPS 9570 without much luck the past 2 weeks. Drops of up to 80% performance in games (from 150fps to 15-30fps) V-sync does not fix the issue, makes it worse. Terrible performance with Adobe video editing applications. 

To answer your questions:

a) Yes exact same games, same Adobe applications.

b) AC power

c) Updated to windows 1803  (I believe this is could be the problem!) :Hmm:

d) Updated to BIOS 1.3.1 for XPS 9570 (again possibly the problem!) :Hmm:

e) Yes, I've tweaked everything to maximum and set all apps to use Nvidia GPU.

f) No faults detected. I tested with the recovery image and then updates (from Dell site) no change.


I wiped the laptop back to the factory image from the recovery partition. This didn't fix anything... even with the old drivers. It was working fine when I first received the laptop, had no performance problems. The fact this is no longer the case with the original factory image is puzzling! I suspect the recent BIOS update is the issue.

Other issues include, videos stuttering for the first few seconds or when the cursor is moved. Videos not up-scaling correctly on YouTube (You can see a pixel-like grid on 1080p and lower) When you move the cursor in full screen videos appear smoother and up-scaled. When the cursor and play-bar dissapears videos lag for a few seconds and you can then see a grid/rough edges as the videos aren't up-scaling.  

Lastly both the Intel and Nvidia GPU are under load at the exact same time under the performance monitor. The GPU switching might be broken, causing all these issues. I re-installed the Intel Thermal Dynamic Platform driver and even rolled it back, but had no luck.

For the laptop to suddenly drop in performance by 5x is beyond thermal throttling. The only other explanation I can think of is a hardware fault if not the BIOS or Windows update. A number of people have reported these faults over the past few weeks.

Please send this to the system engineers/software devs so we can get this fixed ASAP!

Replies (66)



@Dell-Alan D


2 Bronze
2 Bronze

Hello everyone,

I got a Dell XPS 15 9570, just 5 months back in june/july. And until the first week of November, it was working great.

One day while running benchmark tests I noticed the multicore performance was very low. Upon checking the task manager, my processor utilization wouldn't go above 60-70%. In multicore applications, once my processor utilization went above 35-40% my clock speeds would drop down to 1.5-1.7Ghz and never increased causing slow applications and task execution.

I reset my computer twice(once without and once with deleting the files) but to no avail.
My cooling policy is set to active but my fans are just not running maybe dell changed the cooling policy in the BIOS 1.5.0 update. But on testing the ESAT BIOS testing utility my computer was working fine and in its processor stress tests my fans were running properly.
Running the performance test section in the custom diagnostics of the dell support assist application detects no errors but Cinebench R15, as well as User Benchmark, show the problem(results below).

Test Results:
1) User Benchmark:
                                a) Overall this PC is performing below expectations (26th percentile). This means that out of 100 PCs with exactly the same components, 74 performed better. The overall PC percentile is the average of each of its individual components. Use the charts in the benchmark sections of this report to identify problem areas.

                                b) Processor: With a good single core score, this CPU can easily handle the majority of general computing tasks. Additionally, this processor can handle very light workstation and even some very light server workloads. Finally, with a gaming score of 57.6%, this CPUs suitability for 3D gaming is above average.
                                Actual Results:
                                Intel Core i7-8750H
                                 36,282 User benchmarks, average bench 84%
                                 U3E1, 1 CPU, 6 cores, 12 threads, 
                                 Base clock 2.2 GHz, turbo 2.5 GHz (avg) ~ the turbo average look at that
                                 Performing way below expectations (10th percentile bench 56%):
                                 Single core score: SC Int 116, SC Float 124, SC Mixed 122, 97% 121 Pts ~ Single core is ok
                                 Quad-core score: QC Int 417, QC Float 258, QC Mixed 223, 68% 299 Pts~ Look at this
                                 Multi-core score: MC Int 288, MC Float 324, MC Mixed 306, 46% 306 Pts ~ Look at this

                         c) SSD: 97.9% is a very good SSD score. This drive is suitable for moderate workstation use, it will facilitate fast boots, responsive applications and ensure minimum IO wait times.

                          d) RAM: 16GB is enough RAM to run any version of Windows and it's more than sufficient for nearly all games. 16GB also allows for very large file and system caches, software development and batch photo editing/processing(RAM slowdown has also occurred due to slow multicore speeds

Earlier the overall score always used to be always above the 93rd percentile

2) Cinebench:
On battery(max performance mode): 348
Power cable plugged in(max performance): 395(just a slight increase)Screenshot_2.png




As quoted on https://www.notebookcheck.net/The-XPS-15-9570-with-i7-8750H-CPU-is-almost-twice-as-fast-as-its-prede... the score should be around 1050 points, not 390 which is pathetic

Cinebench is a multicore benchmark test still my processor utilization would not go above 60%. It hit 100% first and then in an instant dropped down to 55% and stabilized there. Also look at the clock speeds this is on max load

On reading this dell community forum query on this link: https://www.dell.com/community/Laptops-General-Read-Only/XPS-9550-Always-Slow-Performance-again-the-...
It says that the motherboard has to be replaced. But I am not at the USA right now I'm in another country at the moment and will be here till the next August because of my work demands and unfortunately, I don't have international warranty.

What should I do? I cannot afford to spend on another laptop as my config already cost me $1500. Anyone who can provide any valuable suggestions and solutions please help as this is my brand new laptop.

Note: On running single core tasks the results are just as good as before it gives the same max clock speeds of above 3.6Ghz

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Hi all,

This is indeed BIOS related. It is a very strange GPU temperature bug from 1.3.1 onwards - causing performance issues under 48 degrees. Yes, completely ridiculous! See the recent article below - it also confirms my experience running the Unigine benchmark from other posts. Hopefully Dell will finally fix it now the issue is growing...


Soooo, in the meantime run the laptop "not too hot, not too cold - just right" (seriously DELL FIX IT!)



2 Bronze
2 Bronze

I'm having the same problem. And no one from dell is responding, that's just sad.


I am having the very same issues as OP on my 9570, is there a fix out there?


Bump @Dell-Alan D


Hi Alan,

As you can see a number of other people are having issues. They have also mentioned further changes made by Dell to slow down the product to unacceptable levels. A user has mentioned they returned the laptop for replacement 3 times - but this still did not resolve the issue. 

If Dell cannot fix the issue and it is found to be a common fault, I will consider taking this to the ACCC (Australian Competition and Consumer Commission) for misleading specifications and releasing faulty devices that do not perform adequately - also wasting my time! Please note this is an independent branch of the Australian Government and has jurisdiction in presenting legal cases against companies and issuing fines. I may also notify Linus media group and Dave Lee to see if they are interested in investigating the issue :Surprise: it appears Dell has managed to outdo Apple in "throttlegate"


I suggest you immediately notify your manager and elevate this issue, also please see the thread below.


(I have archived these pages)



Hi Mark,

Yeah, I use Adobe CC applications for work. Luckily I have a workstation for my job, however when I need to edit on the go it can be a problem. Videos stutter, audio has pops and artifacts - I almost believe my old Dell XPS 9550 from a few years ago actually performed better...:Hmm:

The problem is the XPS chassis and some of the internals haven't changed over 3 generations. Components are swapped out - but the design can't cope with the demands of the newer hardware. Exactly why a lot of people said not to bother with the i9 version...

I actually think the performance downgrades are to stop the laptop from burning-out early or causing other damage. My old XPS 9550 battery started swelling after a while... go figure :TongueTied:

I may return it if the issue is not resolved or patched soon. Hopefully it's something that can be fixed through optimisation, but I'm not holding my breath. I'm in Australia - we have pretty good consumer protection laws here, so I shouldn't have an issue returning it.


As for my usage. I've been running Lumion which is a 3D rendering software. Before the bios update my GPU is running at a respectable 1100mhz core clock. After the bios update, it is now running at 600-700mhz. The new bios update just made my laptop unusable. They also blocked bios downgrade and I'm already beyond the 30th day return period. If Dell does not fix this right, I'm making sure my whole company will stop buying Dell from now on and get another competing brand instead.

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