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My motherboard (ASUS ROG Maximus XI Hero Wi-Fi) is only letting ethernet go to 100mbs and not a gig for some reason i dont know how to fix it ive changing the speed under the control panel but when i do that it just says there is no cable connected. I would say its the cable but i know the cable...

Hello. I OCed my i5 8600k to 4.8Ghz. Voltage is 1.232V and temps around 65°C when using cinebench. My mobo is msi z370 sli plus. I have on XMP, OCed by writing multilpier 48 and voltage auto. At 5Ghz I have 1,36V. 1. What else should I set in bios or windows options if I am missing something...