Editing HEVC or iPhone videos on pc help! Which pc can edit?

[supershadow230]

So I shoot a lot on my iPhone it’s really convenient and the 4k60 on the iPhone 11 is really good! however when editing I can’t really do a lot. Files lag, audio glitches, video goes black. something with .mov files back in the day which premiere pro seems to handle much better than Sony Vegas. That’s why I switched to it! But those are h264 files, now with more and more things moving to h265 I can’t seem to edit smoothly... My specs aren’t good but they should be enough to edit. 
ryzen 2600, 16gb 3200mhz, rx 570 and an ssd. 
 

Adobe media encoder has issues with handling these files so I can’t even convert them most work but some files just won’t work. handbrake does something weird and they lag even more after being converted to mp4. I like high quality videos (why I got an iPhone 11) 

I’m sure a MacBook Pro would be able to edit them I hope so lol but that’s expensive! 

would an Intel cpu of rtx Card help ?