@Jan-Stribny

Hi and welcome to the user to user forums.

First there is a big difference between a video player on a computer and a video editor. Just because a file will play in a player doesn't mean a video editor will be able to do the same.

The video editor will need a lot of free space on the C: drive to start with as it creates and destroys temp files. Depending on the files used in the editor you may need more than 20GBs of free C: drive space.

Also unless you recorded using MP4 your Radeon Vega 8 integrated graphics may struggle decoding an HEVC encoded video file. Really you need an additional graphics card with at least 4GB of vram to edit 4K smoothly.

In the program settings, File/ Settings/ Program, open the Device options tab and see if the Radeon Graphics card has been selected for the Import, Processing and Export settings. If they have try setting them all to CPU and see if the file runs better or worse.

If worse, try setting those settings back to your GPU and then go to the movie settings and enable proxy files. That may help but that should not in my opinion be your first thing to try. More of a last resort.

Ideally you need an additional graphics card. I would suggest at least a 3 or 4 series nvidia card as the good cards for video editing that are older than those are now more expensive than some of the newer ones. I can't comment on AMD graphics cards as I have never owned one.

Ray.

@johnebaker

Hi John.

Your fingers are definitely faster than my own 😂👍.

Ray.

Assuming the source video files are on an internal drive in the computer, your options are limited to turning on 'Automatically create proxy files' option in the Project settings.

Yes, video files are on internal drive. And only this drive is for video files. Nothing else aren't there. I try turned on 'Automatically create proxy files' , but result is same.

Anyway, thanks. I'll look for a graphics card

In the program settings, File/ Settings/ Program, open the Device options tab and see if the Radeon Graphics card has been selected for the Import, Processing and Export settings. If they have try setting them all to CPU and see if the file runs better or worse.

If worse, try setting those settings back to your GPU and then go to the movie settings and enable proxy files. That may help but that should not in my opinion be your first thing to try. More of a last resort.

I have tried both options, but the result is the same.

Interestingly though, when I try the same thing on my 5 year old work laptop (Intel Core I7-9750H, Intel UHD Graphics 630 + NVIDIA Quadro P600 4GBB GDDR5 SDRAM, 16 GB RAM), actually all the parameters are worse compared to the AMD PC. I don't have this problem on the laptop and the video is smooth.

@Jan-Stribny

Hi

. . . .  try the same thing on my 5 year old work laptop (Intel Core I7-9750H, Intel UHD Graphics 630 + NVIDIA Quadro P600  . . . .  the video is smooth.. . . . actually all the parameters are worse compared to the AMD PC . . . .

On the contrary the laptop is better performing than the AMD because the UHD 630 and the Quadro P600 both support h.264 (AVC) and h.265 (HEVC) hardware decoding of video. Depending on the laptops GPU configuration, either one of the GPUs, or both if it has a hybrid mode, will be in use.

John EB

Magix Support once wrote this

Our software has been tested with integrated cards from Intel and with dedicated cards from Intel, AMD and NVIDIA.
The integrated cards from AMD do not have the technical challenges to work completely with the engine. This can lead to a drop in performance, as the Infusion Engine 3 cannot access the graphics card.
As we are dealing with 4k material here, I would recommend a dedicated graphics card due to the necessary computing power and performance. This would mean a significant reduction in the load on the CPU.

As some have already mentioned, you should use an NVIDIA 1050 or higher or an AMD RX470 or higher.

https://www.magix.info/de/forum/amd-cpu-ryzen-7-5700g-von-magix-deluxe-untersttzt--1303996/#ca1801156

@Jan-Stribny

Hi.

Your nvidia Quadro P600 is at least 37% more powerful than the Radeon Vega 8 chip and has vram attached which is much faster than the motherboard ram on your newer machine and if as John says, both that and the Intel HD 630 are enabled, would be much better at dealing with H264 and H265 codecs. Even the internal Intel HD630 in the Intel I7-9750H on its own would be more powerful in that respect.

Although your new processor is newer it is not any more powerful than your older laptops CPU, which for its time, has a higher end CPU in it.

Ray.