As some of you might remember, some 6 months ago I posted an enthusiastic message in this Forum about how incredibly fast my timeline playback in VP 13 became after I switched to my current (then new) editing system, and the GTX 1080 GPU in particular (see my signature for details). Never hiding I bought this particular CUDA card mainly with Resolve in mind, I was inded happy that my beloved Vegas Pro would also benefit from it so much that it almost started feeling like a modern, hw-accelerated NLE... Plus - at that time - I was still looking forward to Magix VP 14 as a version that would take me even higher in the positive direction, as far as the system performance is concerned. Enough to say I was able to play back my FS-7 XAVC-I (10-bit, 4:2:2) UHD footage at Full/Best with full 25 fps speed even with a number of effects, while my 50 fps footage was almost reaching the full speed, as well. Moreover - the 25 fps projects played back at Best/Full resolution and with full speed even when i switched to 32bit precision in project settings, enabling more pecise grading and cc-ing in 10 bit depth (using my Decklink 4K Extreme 12G card).
But - my ethusiasm has been ruined totally with the installation of the first VP 14 release. What's more, not only did it slow down timeline playback to a crawl - it sort of took VP 13 with it in the sense that even in the original SVP 13, the playback engine lost its playback speed capabilities I experienced with my (then) new hardware!
And last but not least: every new build of Magix VP 14 has been consistently slower then the previous one, which is something I can't understand at all... I've just installed the Build 201, and even in 8-bit projects, my 25 fps XAVC-I UHD footage (alone - w/o any effects) cannot exceed 15 fps when in Best/Full; just what's going on?