Error message - couldn't create content trying without depth buffer

Try to save your patch as something like "mypatch-debug.maxpat", then tear down your patch step by step by removing parts of it, starting by what seems to be unrelated to your issue (like maybe non-jitter parts in your case), and see if the problem persists. If the problem persists, keep removing stuff. Once the problem and/or the error message is gone, so whatever you just removed was likely causing that issue. Once you get the culprite, either you manage by yourself to find how to prevent the issue, or you post here the stripped down version of your patch (the last one still showing the issue) so we can help you in a more efficient way.

Tip: that method works for most problems you may encounter in Max.