I've read through so many posts about this topic and as soon as I'm sure I figured out what the best components are to get the best performance I read something else that suggests the absolute opposite. For example, there's a post at the top of the forum right now that links to a CPU test testing the i9 9900K against other processors and showing the Threadripper 2950X has the best performance, however I was under the impression Intel was the way to go due to QSV. Then again, I'm assuming that test is just for the CPU and QSV is disabled? If so, shouldn't the i9 9900K dominate? I've also read so many posts suggesting that AMD graphics cards are the way to go as VEGAS takes advantage of OpenCL, but then I've seen other people say they upgraded to a new high end AMD card and their timeline/rendering performance plummeted. It appears graphics card performance varies from model to model and the specs of the card don't really mean anything. I've even had some weird personal experiences with this myself, for instance back on VP12 I had dual GTX580's in SLI and my timeline performance was AMAZING! Then one day there was an update to VP12 and ever since then the 580's didn't seem to help much.
My current computer is a 14 core i9-7940X, with 64GB of RAM in quad channel, and dual GTX 1080ti's in SLI in Windows 10, and I have to say this particular PC struggles editing even 1080p 60fps mp4's recorded from OBS when VEGAS is set to draft auto at the moment. I get pretty decent exporting performance when using NVENC, however I found having a GPU enabled for editing in the timeline seems to make performance worse (maybe VEGAS doesn't fully support the GTX1080ti in the timeline yet?) so I actually have it disabled. I read high CPU core counts and core speeds are the most important in terms of performance (which makes sense considering the Threadripper was so high in that test I mentioned earlier) and that's why my current PC has a 14 core processor, but I'm thinking the absence of QSV on this CPU could be an issue here.
So my questions are:
1. Is there any info out there comparing QSV, OpenCL, and CUDA in terms of editing and exporting performance? If not, in your experience which of the 3 results in the best performance for you?
2. Which specific model graphics cards currently work the best for accelerating editing/exporting?
3. I'm starting to get the feeling QSV is the way to go for everything since it seems every computer I currently own either doesn't have QSV or has an old version of Intel HD Graphics, but since VEGAS tends to have trouble working with newer NVIDIA / AMD graphics card models, does it have trouble using QSV with newer integrated Intel UHD Graphics as well? (I'm asking because I'm considering the 9900K but since it's so new I'm concerned VEGAS might not fully support QSV with it).
I would really appreciate any help or suggestions in this matter. We edit multiple videos per day in VP 16 and we really just want to invest in a new computer that will allow us to edit smoothly again! Thanks in advance!