Dropped 30 FPS for Unknown Reason

[MACKY197]

First time posting. Thanks in advance! 

For reference, I have been playing Division 2 for some time now and I have been able to get around 90 fps with the highest settings in every category. Recently I was only able to get around 55-70 fps. I don't know what's causing it. No error messages at all. Please see the attached benchmark result from 3DMARK Time Spy. I slightly overclocked cpu and gpu but the result was still bad. Comparing with other scores online, systems with similar setups scored up to 13000 but mine is only 9300 now ( 9078 before any OC). Cooling should be no problem. I installed everything carefully and cleaned the internals with canned air on a monthly basis. Please give possible diagnosis and solutions. Thanks for your help!

 

OS Name    Microsoft Windows 10 Pro x64
Version    10.0.18362 Build 18362
Processor    i7-8700K 

Video Card: Gigabyte 1080ti Gaming OC 11G

Video Card Driver: 436.48 

Mobo    ROG MAXIMUS XI HERO (WI-FI)
BIOS Version/Date    American Megatrends Inc. 1302, 2019-09-02
Embedded Controller Version    255.255
Installed Physical Memory (RAM)    32.0 GB Corsair Vengence rgb pro

monitor: 16:9 1440p 144hz LG 32GK650F

SSD: Samsung 970 EVO 1tb
 

result 2 time spy .3dmark-result

[SpookyCitrus]

Recent game or GPU update could be causing it, however you should definitely monitor your CPU and GPU temps while playing just to make sure.