Hello everyone!
I'm new here and hope this sub-forum is the right one for my question.
I've lived happily with an AMD Phenom II x4 955 BE for a long time and recently upgraded to an AMD FX-8350.
Since then I have been experiencing problems with GTA V, the game that challenges my rig most: Every 18-20 seconds there are strong performance losses (frame drops, jerks), after another 18-20 seconds everything is fine again and runs very smoothly. The whole thing repeats itself constantly and indefinitely.
The attached screenshots show my task manager, which shows how the clock speed of my CPU falls and rises in exactly this rhythm between 4.1 GHz and 1.39 GHz. My GPU (NVIDIA GeForce GTX 750 Ti, worked with the old processor) does exactly the same.
I've read elsewhere that this might be caused by cooling problems. However, I have an Artic Freezer in it that keeps my CPU at 13°C at idle and 32°C at full load. That shouldn't be a problem.
Via BIOS I tried to force my CPU to 4.1 GHz, apparently without success. The Windows 10 energy saving plan speaks of "high performance".
What else could be a reason? Why does performance rise and fall in exactly this regular rhythm?
Most important information about my crutch:
Total average graphics settings, no special performance requirements
I hope you can help me!

I'm new here and hope this sub-forum is the right one for my question.
I've lived happily with an AMD Phenom II x4 955 BE for a long time and recently upgraded to an AMD FX-8350.
Since then I have been experiencing problems with GTA V, the game that challenges my rig most: Every 18-20 seconds there are strong performance losses (frame drops, jerks), after another 18-20 seconds everything is fine again and runs very smoothly. The whole thing repeats itself constantly and indefinitely.
The attached screenshots show my task manager, which shows how the clock speed of my CPU falls and rises in exactly this rhythm between 4.1 GHz and 1.39 GHz. My GPU (NVIDIA GeForce GTX 750 Ti, worked with the old processor) does exactly the same.
I've read elsewhere that this might be caused by cooling problems. However, I have an Artic Freezer in it that keeps my CPU at 13°C at idle and 32°C at full load. That shouldn't be a problem.
Via BIOS I tried to force my CPU to 4.1 GHz, apparently without success. The Windows 10 energy saving plan speaks of "high performance".
What else could be a reason? Why does performance rise and fall in exactly this regular rhythm?
Most important information about my crutch:
- OS: Windows 10 Home Premium (64-bit)
- CPU: AMD FX(tm)-8350 Eight-Core Processor, 4100 MHz, 4 cores, 8 logical processors
- GPU: NVIDIA GeForce GTX 750 Ti
- RAM: 8 GB (5.9 in use with GTA V running)
- BIOS version/date: American Megatrends Inc. 2101, 02.04.2015
- MB: ASUSTeK Computer INC. M5A78L LE
Total average graphics settings, no special performance requirements
I hope you can help me!

