How can i solve this rectangle and crop tools problem?

[Mizankhan01]

Wtach my pc screen record 

Screen Record 

[Bob_Hallam]

Please describe the error.  I can not view the screen recording on my system

[Mizankhan01]

https://drive.google.com/open?id=1xEZjCB614KyfYM5rI08K2Rf8Tvy92oKV

[Mizankhan01]

Please Check out this link:  https://drive.google.com/open?id=1xEZjCB614KyfYM5rI08K2Rf8Tvy92oKV

[Muqqarib Hassan]

I guess your question is that when you draw something, your photoshop screen starts blinking. right?

If this then go to Edit>Preferences,>Performace> and select the advance setting and choose the drawing mode normal if you have selected already

the normal option then chooses advance. Let me know if your problem is resolved.