Has there been any progress on this bug so far?
it would be awesome to have this fixed, I'm still experiencing this issue on Opera Version: 77.0.4054.90
I haven't written this above but I'm on Windows 10 20H2 in case knowing the OS is important.
Please tell me if there's anything else I can do to help tracing down this issue

Re: Moving the mouse over links is not smooth (stuttering)

I'm having this exact issue as well although I'm not on OperaGX, I'm on a normal Opera installation (Version: 74.0.3911.232)

Same as with the other post if I disable Hardware rendering the issues seems to be fixed so it might be a GPU-related problem

I have a Radeon RX580 GPU and a Ryzen 5 2600 CPU.