Question Laggy gameplay on high fps?

Oct 26, 2020
Hi all, I am new here and don't know if this is the correct place for this thread so please correct me if I am wrong.
TY ; )

So here is what I am experiencing...

While I am playing games like Battlefield 4/Battlefield 5 I experience lagish gameplay although my fps is good. (60fps) Vsync enabled.
I know what Input-lag is and its not it I get good response time.
I know what fps lag is and it is not it my fps is stable.
I know what stuttering is due to RAM or CPU and it is also not that.
It is a weird and hard lag to explain, when moving my mouse and looking around in these games its
like the rotation is not 100% smooth. In terms of fps its smooth but it goes faster and slower faster and slower.
Its actually hard to notice sometimes but I do and it makes me crazy as I don't know what it can be.
This might sound totally crazy and makes no sense I know, I just don't know how to explain it better,
I'm sure there is some geeks that know exactly what I am talking about lol.
Please any help as to what this is and what can cause it will be appreciated.
I do not run any overclocking on any component.

Thx in advance.

My System Specs:

Processor AMD Ryzen 5 1600 Six-Core Processor
Memory 16GB DDR4 3000mhz G.Skill Aegis (2 x 8GB Dual Channel)
GPU 4GB RX560 XFX XXX Edition
Motherboard Asus A320M-K (Latest Bios)
Power supply Hunykey GS-500 (Don't Judge) XD
OS Windows 10 pro 64-bit