Question My Monitor keeps flickering and horizontal lines on screen when connected to cpu but when I used a tv there's no flicker and lines on TV screen. Help

[Claude Lorenz]

My Monitor keeps flickering and horizontal lines on screen when connected to cpu but when I used a tv there's no flicker and lines on TV screen. Help

 

[rgd1101]

model of the monitor?
what the gpu model?
using what connection?

 

[Claude Lorenz]

model of the monitor?
what the gpu model?
using what connection?

monitor: Nvision XC24s
Gpu: AMD Radeon(TM) Vega 8
connection: HDMI