uncleTACO8873
Even my model specifically has had overheating problems with other people, especially with the quad cores like mine.
So it's a good idea to monitor actual temperature and may be to downclock the gpu (or make a custom profile in AMD Overdrive).
Would it be better on my hardware to do the manual Avisynth script, with K-lite, ffd, mvtools and all that? Or is it the same exact thing and won't make a difference?
It's the same, SVP Manager is a way to automate all that stuff.
And most of scripts in the last year are using SVP libraries, not MVTools 
