Good PC can't play 4k 120 fps footage smoothly even with proxys...

[jorgea97083906]

Hello,

I have a fairly good PC (Ryzen 7 3700x, 32GB 3200 Mhz RAM, GTX1070, three diferent SSDs for windows, footage and scratch files... 

I usually edit gopro 2k footage with this rig with no problem without the need to use proxys, well recently did a trip with a friend of mine who has a Sony A7s III and he gave me some of his 4k 120 fps footage... wich i know is a lot more data to deal than my usual gopro workload, but i thought that my pc could handle it... welll im struggling here to get workable playback, even using proxys and setting the playback quality to 1/4... Any ideas what's the reason for this?? Is just my PC not good enough?? 

[Andy 1968]

Some of the the new camera codes are hard to playback. You can run the Windows task manager to see the bottle neck. You have an AMD CPU. I dont know if Intel's Quick Sync or the GPU can decode the A7S III files or not. The video might be worth watching.