@tr0gmar There are a few things you can try to help with your CPU usage.
Is v-sync (and g-sync if supported) on or off?
Are there any second applications open during the game (streaming, recording, chat, etc.)
Is it possible to extract a pattern of gameplay when the issue happens? (If you are seeing any spikes during combat, safe zones, Dead Zones, or if it has been randomly occurring)
Is it before or after any specific events?
You can also share your system files by submitting a support ticket to take a closer look at this with you as well.
@TK105 I appreciate you providing this information with us, but please understand that all PC specs are different and we take this into considerations when looking into each issue to help resolve the problem first and to collect further information to the game team if all steps have been exhausted. If all steps have been tried, please don't hesitate to send your MSINFO and DxDIAG on our "Live Chat" service when this is available or via our social media accounts on Twitter or Facebook. This will allow us to share this information with our team to further investigate. We thank you for bearing with us in the meantime while further investigating this with you.