/vr/ - Retro Games

Picked up this 21-inch Nanao monitor from an old photography studio. Must have been used for their image processing as it appears to be professional grade. Largest CRT monitor I have gotten my hands on, good resolution and refresh rate.
Only problem is every so often the screen will blink and 'wobble' as the image moves inwards for a brief moment either vertically or horizontally, like it is having trouble holding the adjustment settings. I have it plugged into a power strip so I was wondering if the issue is a lack of power or simply showing signs of age.
Pic related running RE2 Classic Rebirth on windows.