5600x + Asus B550M-K

Computer Type: Desktop

GPU: RTX 3080

CPU: RYZEN 5 5600x

Motherboard: ASUS Prime B550M-K

BIOS Version: 3701

RAM: 16GB 3200 MHZ Gskill

PSU: Some ASUS 750Watt

Case: Asus Case

Operating System & Version: WINDOWS 10 PRO 19045

GPU Drivers: GEFORCE 566.14

Chipset Drivers: i dont know Background Applications: none

Description of Original Problem:

Hello guys I was playing around with some settings in BIOS I wanted to have sone higher clocks but I cant get it. I set from Ai tweaked DOCP and Clock core ratio to 45.00. And cpu core voltage is set to Auto. This way I went to Advanced tab and there from Amd Overclocking PBO enabled to Motherboard, Curve optimizer is at auto right now and plus 175 Mhz from PBO. So if i start a benchmark cpu is stable at 4500 Mhz but never boosts higher than that. If I will change the CPU ratio under Ai tweaker to 46 the computer just reboots under load. I have a 750 W PSU and my graphics card is RTX 3080. My temps are around 70-74 degrees. How can I optimize further and get some PBO?