I apologize for the delayed response. I was out of town and did not see this untill now. Unfortunately, I spoke with my client and they prohibited me from sharing their media files so all I can share is the project file itself (if that's of any use). Please let me know. In dealing with this issue over the past month, however, I will try to describe what appears to cause the RAM spike to the best of my ability. For my case, I do not believe the RAM issue is related to any effects or lumetri as I have not incorporated these into my project yet. Sadly, with the nature of the issue, its hard for me to pinpoint an exact cause as the problem is very sporadic and inconsistent. However, I am somewhat inclined to believe the issue comes as a result of premiere trying to generate preview files? Until recently, all I had been doing was scrubbing through clips (often at faster speeds with the JKL shortcuts), cutting the clips, nesting parts, and making multicamera sequences. That being said, my RAM has the initial spike only during playback or immediately after trying to start playback (in which case it freezes on the first frame). The initial spike does not seem to happen while paused or during nesting/multicam sequence processing (I was actually able to continue nesting sequences when the RAM spiked, although with a great lag). I am somewhat tempted to say the spike happens mostly after having made a cut in the timeline but I cant substantiate that - it's just a feeling. Beyond this, the only other time I seem to notice the RAM spike sometimes is when I use the "match frame in source monitor" command. A media pending dialogue box will appear in the source monitor, followed by the spike. The strange thing is, if I just playback any media file or edited sequence without making any cuts/ adjustments, it seems like I can do so over and over without experiencing the issue. That is why I perhaps believe it is an issue with generating previews as I assume that this is what happens behind the scenes when cutting a clip, but that is just a guess. It may be important to note that I have tried disabling previews in the timeline as well as switching my bins to list view when visible in a panel. Unfortunately, neither has helped. Beyond this, I also basically tried toggling on/off any project or interface setting I was able to access while the the RAM was maxed out to see if it would help. Sadly, again, nothing brought the RAM back down as far as I tried. As mentioned before, my footage is all from a Canon 80D shooting at 1080p with h.264 compression. I did not transcode my footage as my computer should be capable of processing this codec. At times, it has felt like certain clips may be causing the RAM spike to happen more reproducibly, but in all instances, I was able to make it past that point after a few attempts. I thought disabling hardware decoding of h.264 may help but it did not solve the problem. I also tried adjusting Premiere's RAM limit, but it seems to be ignored as my system usage shows Premiere will continue to use all available RAM (up to ~60GB). I hope this helps. I obviously want to get this resolved as fast as possible. Please let me know if I can provide assistance in any other way.
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