Sorry, my bad - Disc Doctor is now called Disk Utility in OS X Sierra and "Rebuild Disk Permissions" has been integrated in "First Aid" as far as I understand.https://support.apple.com/en-bn/HT201560
Rebuild Disk Permissions is a standard housekeeping chore (or was until Disk Utility came along) that I've used for eons. As it's no longer part of the MacOS I use CleanMyMac and Rebuild Disk Permissions manually each and every time before I restart my computer when using TCMPro. I don't know if it affects the TC files or application, but better safe than sorry. BTW, CleanMyMac is a great program to get rid of junk on your computer. http://macpaw.com/cleanmymac
IMHO autosaving that often is overly paranoid, although I've had file corruption a few times and lost a lot of work. (Frustrating yes, but not all bad though, as redoing some items causes you to think and sometimes come up with better solutions).
As mentioned previously, I don't want to get interrupted by autosave as it disturbs the creative juices
. Instead I created a workflow where every day I go File>Save As... and create a back-up copy of my file on a separate hard drive. I then go back to work on the original file. Should that file get screwed up I haven't lost much... Daily works for me, but any time period would of course work...
Also make sure your file lives on the computer hard drive or one attached by a fast connection (like USB 3 or Thunderbolt). If it lives on say Dropbox or a USB 2 HD you'll get slow saves...
File>Compact... is in TCMPro, don't know about DeLuxe which you have, right? I haven't used it for some time, but just did - reduced my 578 Mb file to 155 Mb!
Update: Well, that did no good, deleted a whole bunch of objects so no wonder the file size reduced. Obviously this command does not work as it should - back to the original file. Sorry if I caused any confusion.
Be all that as it may, you may have the problem I've encountered a few times now when TCM has misbehaved - a corrupted object in your drawing. Recently I experienced lots of hanging, crashes etc - very frustrating. Finally traced it to a CAD object that I had imported and that had been in my drawing for a long time. For whatever reason it became corrupted and screwed things up in a big way. Once removed all problems seized and all was good again. I then re-imported the same item from the same source, pasted it in place and everything was still fine - go figure!
To find such a culprit I'd suggest turn on half of your layers (and sublayers) and see if your problem continues. Then turn off that half and turn on the other half and see if there's a difference. Whichever half is worse, divide that in half and find which half is giving the problem. Continue in this fashion until you find the culprit layer(s). Once you find the layer, check all objects in that layer for corruption and/or delete them.
Corrugated Iron profile - it's not that complex and you can probably create it yourself if you don't find it online. I usually download .stp (STEP) files which import fine into TCM, once opened in TCM use File>Save As... and voila its a tcp file!
Good sources for CAD objects (mostly free):https://www.mcmaster.comhttp://www.tracepartsonline.nethttps://grabcad.com/library
Finally, make sure you don't have MacKeeper on your computer! It's a nasty piece of malware that is not uncommonly hiding in the deep trenches of many peoples system. Use Spotlight (the magnifying glass icon in the top right corner of your screen) to search for it - if you find it google "complete mackeeper removal" for the specific procedure as just deleting what you find is not sufficient, it has a bunch of hidden files... nasty shit...