You should probably increase the resolution of the monitor. To do this right
click on an empty part of your desktop then select "properties" (left click
to select). The "Display Properties" window should open. Go to the
"Settings" tab. On the left you should se a slider with "Screen resolution"
on top. Drag the slider towards the "More" end and you will notice that the
resolution will increase. Now hit the "apply" button. If you are happy with
the new settings just press "OK" and you are ready. Otherwise change the
resolution again.
If after changing the resolution you notice a flickering in the screen then
you have also to change the refresh rate. To do so as you are in the
"Display properties" hit the "Advanced" button, go to the "Monitor" tab and
under "Screen refresh rate" make sure that a number at least as high as 85
Hertz is shown. If not , use the drop down menu (the down-arrow in the
right) and change it. Hit again apply and if everything fine "OK". If all
the numbers shown are lower than 85 it means that your monitor does not
support 85 Hertz refresh rate in the given resolution and in order to work
comfortable, I will sugest to lower the monitor resolution (as shown before)
and then try to set the refresh rate agin at 85 or above Hertz.