I think you were overlay optimistic about your new system.
I have the same CPU and it's amazingly fast, but it's only 5x the processing power of your old
CPU. Certainly Windows will boot and apps will load
much faster on your M.2 SSD rig, but there's little else that will have an impact on video editing.
I'm not clear if "render" means using the Render Preview tool to make the timeline preview more fluid or actually producing the video, but if you're only seeing a 2x improvement that implies that some of the effects and/or edits are limited by processing bottlenecks that aren't CPU-related.
Your new RX 5600XT supports both AVC and HEVC hardware encoding, but your old GT(X?) 730 wasn't doing anything to help as it doesn't have the required nVidia hardware encoding that PD uses (NVENC). FYI there's no GTX 730 listed on the nVidia site:
The length that your timeline can be played back before stopping seems like the best way to see how much more powerful your new system is, but that comparision only works with the exact same project.
If you'd like to share the project so other people can test it out, use Pack Project Materials under PD's File menu and upload everything to a folder on One Drive or Google Drive. See this
FAQ for more details, and you may want to swap out any clips that you don't want publicly shared.
You can also get smoother timeline preview be reducing the preview resolution to Full HD or HD.
Note that some effects, transitions and other edits may take more procesing power than your system is capable of to apply the edits in real time. In that case, using Render Preview or using the Range Select tool and replacing that section with the produced clip will be the best approach.
This message was edited 1 time. Last update was at Jan 09. 2021 14:44
YouTube/optodata
DS365 | Win11 Pro | Ryzen 9 3950X | RTX 4070 Ti | 32GB RAM | 10TB SSDs | 5K+4K HDR monitors
Canon Vixia GX10 (4K 60p) | HF G30 (HD 60p) | Yi Action+ 4K | 360Fly 4K 360°