Dumping video help?

Hi so i dont know if this is a big issue but when im playing Tomodachi Life i like to record it so i dump the videos, the process is really slow which im okay with because when im done dumping the video the speed goes back to normal and rarely crashes (i changed a config. setting and it crashed, not doing that again) and when i view the video it plays at normal speed, which is really awesome, i was just wondering if there was any way to make the process go faster.
I know i could just use another way to record but i really like this way, also i dont mind if theres no way to fix it, thats probably going to be the case, im just asking to see if there is a solution
Also i think it could be because i keep some other tabs open, about 6 at the moment and that might be whats slowing it down or not, im not sure

Here are some screencaps

Thanks in advance!