by the way, should the gpu acceleration *always* be set to my 1080?

What is the other option? Intel HDxxx?

Basically you have 3 video streams/sources running at the same time which triple the load on everything; 3 times decoding video for editing is no small fast by any means. Are all 3 videos HD 1080 and at what frame rate and format?

Keep im mind that some video files play better in Vegas then others. Give us more information and we can help.

For example. If you are using a 1920x1080 60p file but actually shrink it to a 1/4 (960x540) and another even smaller, it will be easier on your system to first render the with a lower resolution and easier codec and then bring it into Vegas; or record it at a lower resolution if it’s a screen capture or similar.

As you can see, there are lots of things that can be done.

but the moment i change *anything* the prerender is useless.

remember manual p436:

'Because selective prerendering creates multiple files, minor editing on the timeline will not invalidate all of your prerendered video—only the sections you modify will need to be rerendered.'

I don't find above being true in real life. Just shifting an event can just be enough to void the prerender. So I somewhat agree with the assessment.

Unfortunately, the programming core of VP is old and doesn't make full use out of your hardware, no matter how much you throw at it. I have a good rig, don't want to do proxies either, and want to edit in full res with fx applied. I'm running into similar problems as the one's you are experiencing and I shouldn't. Yes this is frustrating. VP is a CPU hog.

Better intelligent background rendering could help improve the situation (have a look at https://www.grassvalley.com/products/edius_pro_9/ )

Try to find plugins that will use the GPU to offload some of the CPU burden. Edit 8-Bit. Welcome to VegasPro Good luck! ;-)

"Build Dynamic RAM Preview" is there for a purpose . use it .

a simple setup wizard would do this thing a lot of good. a little flowchart leading to your specific settings and wants.

"by the way, should the gpu acceleration *always* be set to my 1080?

What is the other option? Intel HDxxx?"

the only other option is off. i read somewhere to turn it off during rendering i think.

let's see.. one video is 1080p. one is 720, and the other is 360. hadn't really thought about that. all of them are 30fps. AVC format. mp4's.

"the programming core of VP is old and doesn't make full use out of your hardware"

lame. does premiere? how is this not updated by now? hm.

makes me wonder how the hollywood guys work. what they use. besides experience.

"Try to find plugins that will use the GPU to offload some of the CPU burden"

gimme a starting point.. a name? thank you sir.

"Build Dynamic RAM Preview" is there for a purpose . use it ."

this looks *very* interesting. nice. thank you too.

i managed to find the hidden settings, also known as "internal". brilliant. invisible settings. good thinking. i changed the word 'true' to 'false' on one of them and now it supposedly won't freeze up while rendering anymore. i essentially had to tell it to knock it off.. this software is stunning.

there was another setting.. 'view transform', i was wondering why the video looked nothing like the original so i looked it up. i had to change 'sRGB (Aces)' to OFF so it would quit **ing with my stuff. this is on by DEFAULT. couldn't believe it.

and now this "Build Dynamic RAM Preview". a magical little thing that'll fix everything, hidden away in settings, that probably should just be incorporated from the get-go, but no, i have to tell it to do it. after i find out about it on the internet. after ripping hair out.

first of all it's greyed out no matter what i try. let's go reading. again. ooohh, i need to select the *region*, and not just simply the clips. ok vegas. i need to drag the loop thing. i hit the button, there's no indication that anything happened, and nothing has changed. i set the thing to use up to 10gb. i'm getting 1.1fps now.

all i can do is laugh

this is incredible

this has to be hell

and this is all to get it as maxed out as i can, only to eventually hit a glass ceiling because the developers haven't gotten around to updating the core programming yet.

can we say **** here? **** vegas. up it's ***.

If you're new to Vegas, swearing won't help. Patience and knowledge does. This is a product in constant development. And since you didn't pay Hollywood-style money for your software, I wouldn't expect it to behave like that. Welcome to the journey. No need to be rude

believe me, swearing helps a hell of a lot. i've been doing it straight for 6 weeks. sometimes as loud as i can.

vegas is pure ******* garbage. that's my review. i've wasted way too much time on this C***.

Get Lightworks, try to get used to it and feel like in Hollywood.

. i had to change 'sRGB (Aces)' to OFF so it would quit **ing with my stuff.

Are you still working in 32bit Full? Why?

“It is easy, when you are young, to believe that what you desire is no less than what you deserve, to assume that if you want something badly enough, it is your God-given right to have it.” 
― Jon Krakauer, Into the Wild