Predator Helios 300 PH315-52-54KC - XPG SX8200 Installed and only getting half read speeds

I just installed a 1TB XPG SX8200 expecting to get at least 3000mb/s read speeds (says up to 3500), but only getting 1500-1600mb/s in crystalmark. The built-in Samsung NVME is getting 2500 easy which makes me think something might be wrong. It's already on PCIe 4x accdg to HWInfo. I need help finding out whether I have to return it ASAP!

System: Predator Helios 300 PH315-52-54KC
CPU: i5-9300H
RAM: 20GB (4 + 16) 2666mhz
SSD: Samsung 256gb (decent)
HDD: Seagate 1tb (ST1000lm049-2gh172)
GPU: RTX 2060 (don't think this matters tho)

XPG SX8200 Speed:

Its details:

Image: https://us.v-cdn.net/6029997/uploads/editor/fs/d7gfnojuspml.jpg

Thread was edited to add model name to the title

Accepted answers

All comments

Goodeman

I actually asked this to the Adata rep, if there is anything in my system that would prevent full speed read and write from this thing (which I also asked here). The answer clearly was none since I was able to reach on average 2500-2700 mb/s on the built in samsung drive, Adata says it should at least be able to match that speed. Also, they were confident there may be a defect because of the consistently lower read speeds and very low RND4K numbers.

xapim

Goodeman its indeed weird as the previous drive you had you could reach full speeds i would say its a drive issue and bare in mind they will always say everything is fine theres no incompatibilities whatsoever its never their fault no matter what happens unfortunately they are there to sell nothing else either way i hope you get it sorted

Goodeman

Update on the new drive:

Speeds are near the acceptable range and deviation between read and write speeds:

Image: https://us.v-cdn.net/6029997/uploads/editor/pk/iftg45gme8os.png

Also an XPG SX8200 drive, just from a more reputable seller (and on sale, which is why I still chose it over 970 evo plus)

Just for reference, the built-in samsung drive benchmarks this much: