I’ve experienced the same thing with a large number of edits. I used a workaround similar to your second post with doing a chunk of edits, then creating a new track version and bouncing those edits. Then do the next chunk of edits, create a new track version and bounce those edits. Repeat until you get all the edits done. I tried pulling up the project to take a screen shot, but can’t find it at the moment. The track version list would look something like:
Edits mm1-25
Edits mm26-50
Edits mm51-75
Edits mm76-100
Etc.
This way you still have the edits available if you need to go back to tweak something and each successive version contains all the bounced edits of the versions prior. For instance:
Edits mm1-25
Edits mm26-50 (contains bounce of measures 1-25)
Edits mm51-75 (contains bounce of measures 1-50)
Edits mm76-100 (contains bounce of measures 1-75)
Hope that makes sense. Additionally, here are some things I found to help out a bit that I’ve posted elsewhere:
Hitpoints: Select all audio events then go to Audio → Hitpoints → Remove Hitpoints. I noticed using the “Create Events from Hitpoints” made the GUI lag like crazy so this helped a bit.
Also worth a shot to turn off “Enable Automatic * Hitpoint Detection” from Preferences → Editing → Audio (it’s the last checkbox listed in that menu).
Using slip editing for edits seemed to get around the lag from hitpoints (which you’re already doing)
Turn off “Background Color Modulation” from Preferences → Event Display → Audio (last checkbox listed)
Limit the number of tracks visible on your screen. Use folders and hide any tracks you aren’t currently editing. The less tracks on your screen means Cubase doesn’t have to work as hard graphically to display waveforms and whatnot
Increase buffer size
Maybe try changing the ruler display if it’s currently set to “Bars and Beats.” I noticed a significant improvement if I changed my ruler to “Timecode” or “Seconds”
Here are a few other posts I found that may also be helpful to you:
slow zooming scrolling GUI when having a lot of audio slices (e.g. edited drums) - Cubase - Steinberg Forums (third post has about five links to other posts dealing with the sluggish GUI issue)