Why is my encoding slower?

I'm South Korean and I'm poor at English. If you want to clarify my ambiguous words, please point out it.

I enjoy riding a bike and record videos every riding. And I have used MacBook for uploading them on YouTube with Garmin VIRB Edit.

I recently assembled the desktop by myself because I want more faster encoding.

Here is two computers spec.

1. MacBook Pro 2013 Early

CPU: i7-3740QM quad core 2.7GHz

RAM: 16GB DDR3

GPU: GeForce GT 650M

SSD: Apple

2. Desktop

CPU: Ryzen 2600

RAM: 16GB DDR4

GPU: GeForce GTX 650

SSD: Samsung PM981

I refered to the benchmark of https://www.cpubenchmark.net.

2600's score is 1.6 times higher than i7's. There is a difference of release year, I anticipated such performance.

I used GeForce GTX 650 I owned because I googled that GPU is of no importance.

Today, I ran VIRB Edit on two computers at the same time. The length of video is about 26 minutes.

I was surprised at the result.

MacBook: 22m 33s

Desktop: 22m 51s

Desktop is slower thant Mac!

(CPU, Memory, Disk, Ethernet, GPU from top and left)

I checked task manager but I thought everything is good.

1. Why is my new desktop slower than old Mac? Is the benchmark load of crap?

2. I think CPU is the problem because it was running at about 100% performance. Is that right? Can I expect faster speed by altering for better CPU like Ryzen 3600?