Performance issues, incorrectly rendered windows or objects, canvas flashes/flickers, visual artifac

Hey, @Venky Vision. Welcome to the Photoshop Community. I'll need more info to help you figure this out. Please share a video of the issue and the system info from Photoshop Help > System info > Copy and paste into a text document > Upload and attach here. Please share a sample PSD document that behaves as reported to me via direct message at my profile.

Does it behave as mentioned after a specific set of steps? What troubleshooting steps have you tried already? In general, troubleshooting the GPU is a good starting point: https://adobe.ly/49UnWxp;

Also, please test and confirm if the issue exists with Photoshop (Beta). You can get Photoshop (beta) from the Creative Cloud > Apps tab > Beta Apps section. 

Thanks! 
Sameer K

(Type '@' and type my name to mention me when you reply)