Monitor blinking off and on

I do not find the problem with Windows 9.0 VR. I switched to Foxfire when I found out you can adjust the size of the print. I have used Foxfire for little more than a year and now this monitor blinking has occurred. My monitor does not blink using Windows 9.0 but I have the inconvenience of not being able to adjust the size of the print. Now I have to depend on the benevolent web sites that offer “Text enhancement”. I Googled “Monitor blinking off and on” and got lots of answers. None of them saying the reason could be Foxfire. I will be using Windows 9.0 if indeed my monitor problems are resolved until Foxfire solves its costumer problem. Fingers crossed.
As always,
BB