I have always ran triple 1080p worth of pixels from my first 6600k.and 980ti at 144hz. ( plus a short spell with VR )
I have found that putting a lot of effort into ensuring that my system ran at its optimal settings meant I have never had problems that actually caused me not to race trouble free.
Background activities at zero
Minimum apps
Pc set to max performance
Computer not allowed to shut down any inputs
Nvidia control panel optimised.
Processor at max reliable frequency
Ram at max reliable frequency
Never clocked the GPU, always seemed to create more problems than it solved.
All the above is important to having reliable racing online.
Specific problem discussed here at Racedepartment forum are a bonus.
We are lucky to have Rasmus, who can advise better than I on any of the above
In a lot more detail.
There is a lot of detail in the above.