SMDegrain questions

[WAusJackBauer]

Hi all. I have some questions regarding SMDegrain.

I use avisynth + +AvsPmod + MeGUI for my video encodes but I don't actually have a lot of avisynth knowledge. I learned the basics years ago from my brothers and that's about it.

For years I've used SMDegrain to denoise videos and not had any problems and was happy with the results. (until recently I think I was using v3.3.5d by Dogway) When I would use SMDegrain, I would type in the word and hit enter and then it would look like this:

SMDegrain(tr=3, thSAD=400, RefineMotion=False, contrasharp=False, interlaced=False, plane=4, prefilter=0, chroma=True, lsb=False, lsb_in=False, lsb_out=False, Show=False)

The only things I would change is make RefineMotion and contrasharp true.

A few weeks ago, I decided to upgrade my SMDegrain to the latest version (4.7.0d) and I also switched to 64bit plugins rather than 32bit as I read doing both should make my encodes faster. As usual, I typed out the word SMdegrain and hit enter and got the same line of "code" as shown above but there was an error, it said lsb was no longer a function or something. I didn't understand what that parameter did so whatever, I just removed those parts and then it worked.

But then I noticed that it wasn't actually denoising much at all and my encode times didn't seem any faster (they might've been slower) and I found this confusing. It seems since v4 and above of Dogway's SMDegrain, a lot of it seems to work differently than before. It's definitely not functioning the same way as my old version of SMDegrain.

So I did a little bit of reading on the parameters and it seems for someone like me who doesn't understand all the parameters very well, it might be easier to just use prefilter 1, 2, 3 ect as I'm not super fussy about tinkering with settings, I just want film noise to mostly be reduced. I want to continue enabling RefineMotion and Contrasharp - this is where my questions start.

1. As an example, If I just use SMDegrain(prefilter=2) will it automatically implement RefineMotion=true and contrasharp=true in the "background" or should I add them to my line of code if I want them enabled?

2. I downloaded a custom 64bit version of MeGUI as I don't think there's an official 64bit build but is there anything else I need to do to take advantage of my new 64bit plugins?