Changing the subject backwards a little bit -- if you are running new cable in the walls and ceiling/attic, I recommend running multiple runs to each destination. The effort to pull cable is large compared to the expense of cable, patch panels and modular jacks. It is just as easy (same...
$7 add-on cable tester at Amazon (also tests coax)
http://a.co/iq8ANq6
Don't test Coax while there's DC on the line (power supply for antenna pre-amp, e.g.). It will kill the coax tester.
I second the need for a tester. Even if one is not installing new cable, a tester can save so much...
In 1998 I wired my house with Cat. 5 (no e) cable, adding 37 cable runs from closet to wallplates and six from closet to service box. They all operate at gigabit speeds.
So, like others, I do not believe your problem is the type of cable that you used, although it is conceivable that you just...