Problem with integrated Graphics clock speed

[calduck]

I recently built my first PC with a Ryzen 5 2400G in hopes of using the integrated graphics to game a bit. Once I had windows installed I went online to get all of my drivers and when I opened up my Radeon settings I thought it was strange that the core clock read 201MHz instead of 1250MHz so I went into Ryzen master and changed the APU GFX clock speed to be 1250MHz which turned off my computer. I did this a few more times with the same results and finally settled with 1000MHz which it was stable at, then I had a new problem with my CPU being stuck at 1.6GHz and after a week I eventually fixed it by resetting my UEFI settings and turning off my Cool 'n quiet mode in the UEFI. Then after fixing all of this and launching a game and playing, I saw that my integrated Graphics clock kept fluctuating from about 400MHz to 1250MHz and wouldn't stick stable clock speed giving my frames in game constant drops from about 60FPS to 20FPS. So I went into Ryzen master and changed the clock back up to 1100MHz which worked and kept my frames consistent but after about an hour of gaming I was greeted with my screen freezing up and a blue screen with the "Stop Code: VIDEO TDR FAILURE" and having what failed to be "atikmpag.sys" which it will continue to do each time raise the clock speed even to something to like 700MHz

 

Please help I too scared to even touch the Ryzen master clock speeds in fear of another blue screen or a dead CPU.

 

CPU: Ryzen 5 2400G wit Vega 11 graphics, Motherboard: Asrock AB350 Pro4, SSD: Intel 256GB 545 M.2 SATA, Memory: 16GB DDR4-3200, Hard drive: 3TB WD, PSU: Corsair RM750X, OS: Windows 10 64-bit (Dats my build)

 

[Jurrunio]

update the bios first.

[O9B0666]

It's not strange that at idle your core clock is that low. Mins around 150-300 on idle or web browsing. 

[O9B0666]

Mines just hanging out around 300 while im typing this now, and nothing else open but cam and chrome.