i5 7600k Bottlenecking GTX 1070 Badly

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BenWVU

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Apr 6, 2014
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My i5 7600k seems to be performing much worse than it has in the past. It frequently runs at 100% in games (Battlefield 1, The Division, Overwatch) while my GTX 1070 remains between 60-90%.
Battlefield 1 used to perform much better (~90 fps, I think) but now hovers in the 50's. Temperatures are fine (~70 C, max) and this happens immediately upon starting a game, not after prolonged play.

What could cause this to happen suddenly? I'm almost ready to reinstall windows.

By the way, my motherboard is an MSI Z270 Gaming Pro Carbon with game boost and xmp enabled, but I've tried it without each with no improvement.
I've checked that the motherboard and GPU drivers are up to date and I've tried resetting bios settings to default.
 
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dederedmi5plus

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Aug 17, 2018
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run 100 % as in 100% all cores or 100% single core, how you get that 100%? windows task manager or benchmark tool, AFAIK gaming is a CPU + GPU intensive process, abstract picture of gaming is CPU calculates multiple random data in to single result data, that single data then fetch to GPU, GPU then parse it back to multiple result data (we can call it frames containing different picture, so the higher grade of GPU the more frames we see on monitor in a single second),
So what are multiple random data that CPU calculating? they are user's command + objects within game's 3D world, CPU retrieves game's data from storage media (HDD SSD ect) and place it on RAM, so you can see how busy CPU is, and game such as BF never let CPU gone to idle unless you pause.
That's my perspective of 100% CPU usage, now about the performance drop, it could be cause by many things, on storage you can try disk defrag, TRIM, this can help CPU seek time, on software side, you can look for OS and game updates, other than those, you can consider thermal issue or wattage delivery issue.
 
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BenWVU

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Apr 6, 2014
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I finally resorted to reinstalling Windows 10 (through Windows reset with the 'keep my files' option). I've only tested Overwatch, so far, but it seems to be running 20-30 fps higher with a much lower CPU load on all cores (~60-90% instead of 100%). Also, the GPU load is now back to 100%, as it should be. Hopefully, this has resolved the issue. I still need to test other games.
 
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ElectrO_90

Splendid
Apr 17, 2007
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First off, bottlenecking is an overused word which generally doesn't happen, in 99% of machines.
It means fast one thing, slow something else, and that means extremes.
Secondly, most CPU problems like you have are normally caused by some nasty browser malware thing.
So use ZHPCleaner next time, before extreme drastic measures, but what you did just proves my point.... it is nearly almost always software problems.
 
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