So basically there's not much to be gained by upping my footage/project drive speed right now? At least not if i'm still using the compressed h264 type video from the panasonic and sony mirrorless and smaller Canon codecs? h264/265 codecs are a nightmare for cpu's. they are heavily compressed (like zip files) and cpu's have a difficult time uncompressing those codecs and rebuilding each frame. transcoding or proxies would help unburden the cpu alot, but faster drives could also help with multiple layers of footage like multi-cam and overlays. The main issue comes up when i'm trying to edit footage that has effects, resizing, cropping, overlays, or color work. most of those functions are suppose to be gpu accelerated, so it might be your gtx 750 ti being a bottleneck. you can use gpu-z to see the gpu usage (gpu load %) while working in premiere to see if the video card is being overworked. for 4k color work it could quickly be overloaded. you might also watch the memory usage in gpu-z, if you have a 2gb card it could be running low with 4k media. Honestly I hate AE. I'm not sure if it's my specs or what, but its so slow that i can't even create cool things in it. As soon as i start messing with plugins and particles and motion and stuff, im looking at abysmally slow playback... AE has always had performance issues, it wasn't originally made to perform in real-time, like a NLE. its an entry level vfx platform, also largely used for motion graphics. they are slowly upgrading AE's performance to use more cpu cores and even the gpu some, but that has been a very slow process for them. i don't use AE, but the regulars in the AE forums always seem to recommend a ssd for cache. if cached playback is poor, it might be helpful with playback. AE often doesn't use more than 4 cores and your cores are already at 4.8ghz. if you are using gpu accelerated plugins for AE, those might perform better with a faster video card. you would have to check with the plugin's forums or website for recommendations. also, if you are bringing linked AE project clips into premiere for your timeline, you may want to bring in a rendered out video clip instead, or use the render and replace function in premiere.
... View more