So I am in premiere CC 2014 and just installed an AMD r9 280 3 gb card. When I hit play on my 4k timline 1/4 res my CPU goes to 100% with terrible playback like 3 fps. The GPU at this point is idle doing nothing at all. Then If I let it play for about 5- 10 seconds suddenly the gpu kicks out of idle to about 50 percent usage and my cpu usage drops to around 50 percent usage. When that happens I get perfect playback. So it looks to me that at the begging of play back the GPU is not helping but then kicking in later. I should also note that if I turn off open CL and just use the CPU I can playback 1/4 res perfectly smooth. Also the footage is on a raid so I am not trying to run this off a single drive. Any ideas what is going on? I was on a 550 ti earlier and did not have this issue with cuda. I just found this 280 open box for 179 so I figured I would give open CL a go and upgrade my gpu.
System specs
AMD FX 8350 4.0 ghz
32 Gb Ram
R9 280 3gb
win 7 64 bit
Premiere CC 2014
8.0.0
Edit: I also would like to add I am gonna test it in premier CC now to see if the issue is a 2014 bug.
Edit: Only happens in 2014. Interestingly enough CPU usage still goes to 100 percent in CC and the GPU does some work but playback is flawless.