Bless you, no!
My (CRT) monitor is as good/bad as ever. But I can hear them laughing up in the Mil Forum from here and imagine their ribald suggestions.
Can you go back to the earlier monitor for a comparison? It would seem that the problem is with your new monitor and, if it is a "low-cost" monitor, it is not all that surprising.
Care to give the make/model of the two monitors and details of your graphics card and settings?