Currently editing a documentary shot in 4k. I have 64 GB of ram and have and spent $4,000 on building an incredibly strong computer in 2019. Have One Hour and 40 minutes of footage in timeline. Playback is extremely choppy and lagging. Can anybody please help me figure out a way to continue editing? Is there a way to make several projects, then combine? Also, I haven't been able to find a way to contact Magix directly....Anybody know of a way to contact them? I really appreciate the help. Thanks!