Photoshop CC15 font problem

Does anyone know why all forms of the SAME font appear separately in the font list?

The font list should look like this:

Arial
Comic Sans
Open Sans
Times New Roman
Etc...

Then, in the second section you can choose Bold, Italic, etc. for that font.

But, in my case font list look like this:

Arial
Arial Bold
Arial Italic
Arial Blabla
Arial Blablabla
Itd...
Comic Sans
Comic Sans Bold
Comic Sans Italic
Itd...

Everything is overloaded and my laptop literally freezes when I open the list of fonts in PS because there are probably 1000 of them... How can i solve that problem? Thanks.