CPU Bottlenecking/Stuttering hard from a new gpu

[dylza]

So I recently posted about if a psu would run a new gpu (1080ti Aorus) which was well received. However after finally getting my hands on it, i have noticed some games that i used to be able to play on my prior 1060 6gb are alot harder to play such as Assassins creed origins, Hitman (1), rise of the tomb raider and gta v. However in gta v its less noticeable as both the cpu and gpu are pegged at 100%. Within hitman msi afterburner says im having around 70 ish fps but the minute i walk into a room filled with npcs i get a huge stuttering issue every 5 or 10 seconds making the game seem unplayable (gpu was working about 45% and cpu was at 90 - 100%, i even asked a friend who has a 1080ti and a 8700k and there gpu was the same but no stuttering). Even in rise of the tomb raider i was showing a friend through a discord screen share to show the problem in which i then got a error saying i did not have enough resources that then followed to give me a bsod with the error being (bad pool caller) i think it was.

Anywho, my question is that is my cpu the issue here, or could it be a driver update failed when i swapped the cards over i used nvidias clean install not ddu. The cpu will get to about 60 degrees depending on the game however something that i noticed using HWInfo is that it claimed my cpu package (i assume the cpu) is using when gaming around 40ish watts so another thought i had was is my psu also under powering as the 1080ti is taking all the power?

Sorry for the spiel of paragraphs but im unsure if my rig is in need of a mobo/cpu upgrade now with the 1080ti. I do understand that my cpu is definitely a bottleneck for the card but the 1080ti price was good and i thought it would only improve my game play even if the GPU wasn't being used to its fullest..

Also my specs are:
cpu: i5 6600k (not oc yet stock 3.5ghz)
cpu cooler: Stock fan (at the time was getting the job done and temps are still relatively alright no thermal throttling as far as I am aware)
mobo: Gigabyte z170x Gaming 3
ram: Corsair Vengance 3200mhz (running at 2133mhz)
gpu:1080ti Auorus OC 11g (max use of 250w, running in gaming mode)
hdd:seagate baraccuda 2tb
ssd: wd blue 500gb
psu:TR2 S 650w (been running the card fine as far as i can tell unless the cpu watt should be higher then 40w maybe 1080 is sucking all the power...)

Thanks to anyone who has taken the time to read this and respond especially if it was a mess just not sure whats happening here.

 

[J_E_D_70]

Would start with using DDU in safe mode and reinstalling nvidia driver.

Also time to OC that cpu and get a decent air cooler. Should be able to hit 4.3-4.5 easily.

Why is your ram not running at its rated speed? It’s almost 33% slower than it should be.

 

[dylza]

Would start with using DDU in safe mode and reinstalling nvidia driver.

Also time to OC that cpu and get a decent air cooler. Should be able to hit 4.3-4.5 easily.

Why is your ram not running at its rated speed? It’s almost 33% slower than it should be.

I assume the ram is running lower due to it being its base freq as i researched that the freq displayed is what it can go up to in the bios with the xmp stuff. Not the best when it comes to ram oc stuff....
As for ddu i will probably try it out tommorow and hope that to can help.
But yeah will probably have to upgrade the cpu cooler and hope oc will fix the issue, as well as havee a decent cpu cooler for the next cpu when i choose to upgrade definatly want an i7 for them extra threads and cores.

 

[J_E_D_70]

Really need to enable xmp.