Computer extremely slow all of sudden low passmark score

[XBlueish]

Was fine couple days ago all of sudden my pc became extremely slow
Reformatted couple times too with remove everything option
So most likely hardware issue i think?
Ran the passmark and the score seems to be pretty low for my spec aswell
Mainly use this pc for gaming
reformatted, updated all drivers and i still cannot smoothly run any games
PUBG for example the fps drop constantly from 180+ to like 10-20ish
Is it because my GPU is dying resulting slowing everything down?

Operating System: Windows 10 Professional Edition build 18363 (64-bit)
Motherboard Manufacturer: MSI
Motherboard Model: Z170A GAMING M9 ACK (MS-7966)
Motherboard Version: 1.0
BIOS Manufacturer: American Megatrends Inc.
BIOS Version: 1.60
BIOS Release Date: 2016/02/24

Type: Intel Core i7-6700K @ 4.00GHz
Codename: Skylake
CPUID: Family 6, Model 5E, Stepping 3
Socket: LGA 1151
Lithography: 14nm
Number of CPU's: 1
Cores per CPU: 4
Logicals per Core: 2
Clock Frequencies:
Measured Speed: 4008.2 MHz [Turbo: 4108.4 MHz]
Multiplier: 40.0X
Bus Speed: 100.2 MHz
Front Side Bus Speed: (N/A)
Timing Error Ratio: 1.000
Cache per CPU package:
L1 Instruction Cache: 4 x 32 KB
L1 Data Cache: 4 x 32 KB
L2 Cache Size: 4 x 256 KB
L3 Cache: 8 MB

Memory Information:
Total Physical Memory: 30GB RAM
Available Physical Memory: 25GB RAM
Memory Devices:
Slot 1: 8GB DDR4 SDRAM PC4-25600
Corsair CMU16GX4M2C3200C16
XMP: 1.35V, Clk: 1600.0MHz, Timings 16-18-18-36

Slot 2: 8GB DDR4 SDRAM PC4-25600
Corsair CMU16GX4M2C3200C16
XMP: 1.35V, Clk: 1600.0MHz, Timings 16-18-18-36

Slot 3: 8GB DDR4 SDRAM PC4-25600
Corsair CMU16GX4M2C3200C16
XMP: 1.35V, Clk: 1600.0MHz, Timings 16-18-18-36

Slot 4: 8GB DDR4 SDRAM PC4-25600
Corsair CMU16GX4M2C3200C16
XMP: 1.35V, Clk: 1600.0MHz, Timings 16-18-18-36

Virtual Memory: C:\pagefile.sys (4864MB)

Drive Information:
Physical Drive 0: ST4000DX001-1CE168
Drive Size: 3726GB
Partitions: C: E: F:
Interface Type: SATA
Bytes per Sector: 512
RPM: 5900

Physical Drive 1: Samsung SSD 850 PRO 256GB
Drive Size: 238GB
Partitions: G:
Interface Type: SATA
Bytes per Sector: 512
RPM: Solid State


Optical Drive 1:
Volume Information:
Volume 1: C: [Local Drive]
File System: NTFS
Drive Cluster Size: 4KB
Volume Size (Free space): 1772.9GB (1683.5GB)

Volume 2: E: [Local Drive]
File System: NTFS
Drive Cluster Size: 4KB
Volume Size (Free space): 976.6GB (976.3GB)

Volume 3: F: [Local Drive]
File System: NTFS
Drive Cluster Size: 4KB
Volume Size (Free space): 976.6GB (976.4GB)

Volume 4: G: [Local Drive]
File System: NTFS
Drive Cluster Size: 4KB
Volume Size (Free space): 140.8GB (139.0GB)

Video Adapters:
Video Card 1: NVIDIA GeForce GTX 1080
SLI/Crossfire Enabled: No
Chip Type: 0x1B80
DAC Type: Integrated RAMDAC
Memory: 8191MB
Driver Provider: NVIDIA
Driver Version: 445.75
Driver Date: 3-17-2020
Monitor 1: 1920x1080x32 60Hz 96 DPI (Primary monitor)

Temperatures:
CPU 0: 29.5C (Maximum: 39.5C)
CPU Core 0: 30.0C (Maximum: 42.0C)
CPU Core 1: 29.0C (Maximum: 39.0C)
CPU Core 2: 27.0C (Maximum: 37.0C)
CPU Core 3: 32.0C (Maximum: 40.0C)
Hard Disk 0: 27.0C (Maximum: 27.0C)
Hard Disk 1: 23.0C (Maximum: 23.0C)
Hard Disk 2:
GPU 0: 28.0C (Maximum: 49.0C)

And my passmark rating
Passmark rating
3246.5
cpu mark
9295.2
2d graphics mark
963.8
3d graphics mark
15890.5
memory mark
3150.7
disk mark
819.5

Any help would be appreciated
Thanks

[David (PassMark)]

Average CPU Mark for the 6700K is 9338 at the moment. So you are very close to average.
Average 3D Mark for the 1080p is 14,654 at the moment. So you are above average.

Your disk result for C:\ drive is rubbish, but that is because your larger HDD is rubbish (in the performance department). Obviously capacity is good.

Those temperatures are from when the machine is idle I suspect. You might want to check temps under load.

[XBlueish]

Average CPU Mark for the 6700K is 9338 at the moment. So you are very close to average.
Average 3D Mark for the 1080p is 14,654 at the moment. So you are above average.

Your disk result for C:\ drive is rubbish, but that is because your larger HDD is rubbish (in the performance department). Obviously capacity is good.

Those temperatures are from when the machine is idle I suspect. You might want to check temps under load.

What about the ssd? Cause my last reformat ive chose the SSD as primary window C drive but problem remains
As for the temp its usually around 40-50 under load

[David (PassMark)]

You can select the hard drive to be tested from the Preferences window.

[XBlueish]

You can select the hard drive to be tested from the Preferences window.

Sorry, how to do that ?

[David (PassMark)]

Menu item, Edit / Preferences.

[XBlueish]

Think i've found the problem
My GPU is somehow stuck at 0.8ghz even under cpu benchmark
It still stuck at 0.8ghz
Is it possible that my cpu is burned by any chance?

[David (PassMark)]

Sorry I don't see the logic.
If you GPU is stuck at 800Mhz (and I didn't see any evidence of that in the benchmarks), then why would that be a CPU problem? More likely it would be a GPU cooling issue.

[XBlueish]

Thanks a lot guys
I've found and fixed the problem
Somehow my motherboard's "slow" option was triggered and locked my cpu on low performance. All i had to do was go to bios and disable "Intel Adaptive Thermal Monitor" option and everything was fixed itself. Thanks for the help guys