HUD Settings > General Settings > HUD Font > 'Scale Font' and turn it on or off based on your preference or click the 'Font' button if you want to increase/decrease the size of all text for the HUD selected in the upper left preview drop-down menu. You can also edit HUD fonts on a stat by stat basis, instead of globally, under the HUD Settings - Stat Appearance menu.
If you continue to have problems: Try to change your DPI Scaling to 125 or 96/Normal - Please see this FAQ -
http://hm2faq.holdemmanager.com/ques...g+DPI+settings