Mouse Pointer Lag, Screen Tearing, & Audio/Picture Sync Issues on Restart - Utube Lin

I have included youtube links showcasing my problems, not including Audio/Video Delay when watching digital movies.

Screen Tear: http://youtu.be/E1IzZ1IWiBc
Mouse Lag: http://youtu.be/CdIs2n_qqd0

I've been having issues with my computer doing some strange stuff and I can't get it to go away. I went 15 hrs testing my overclock on Prime 95 with no problems, rolled back drivers, 970 GTX SLI overclock changes, I changed my mouse from a wired to wireless, new ram, Malwarebytes Virus, you name it. I can't get this to go away and I don't know if it is a hardware issue or what.

I built a new computer using almost completely new parts, except for my hard drives. Two SSD's and a WD Black 7200 1TB I brought from my old CPU. The problem carried on to my new computer and it seemed to come out of nowhere. I formatted and erased my old Windows 8.1 and installed a new copy on my Samsung 840 PRO 128 GB. I have not been able to get it to stop.

I found this tidbit in a thread. It is similar to what I have, but I don't believe it's an overclock issue:

"i dont know about pc slows down... but i think i also experiences this. when i underclock my cpu after overclock, my pc slows down and running at full usage. but, after a shutdown / few restart, i gained normal speed.

i think that the windows are not sync the cpu speed after changes of cpu speed at first. it just likw when you oc for the fist time, you will feel boost speedup and almost never at full speed but after few restart, the pc slows down to 'normal speed' to sync the speed. but after underclock, the pc lost sync and cause this slowness. maybe a few restart will make it better.

maybe what am i saying is true according to my theory. remember THEORY"

I wait about 30 minutes, and when i turn back on my computer, ALL the problems are gone. If I need to shutdown or the computer goes to standby, there is always that chance I will get those problems in the video links I provided. Any help appreciated.