I don’t know If this will help anyone, but this fixed the issue for me. I haven’t experienced this random problem on the project I’m working on until I was attempting to fix a different issue involving cloth late last night. Someone on a different thread (cloth render issue - #6 by NomarkRecords) suggested going into the advanced options inside the sequencer and changing the 24000FPS default to 24fps manually, claiming that it would fix the cloth issue on render. Granted I didn’t understand how that would fix anything considering it was basically still 24fps after the math was completed, but I did it anyways given the cloth issue and my frustration. It seemed to fix the cloth issue so I was happy, I then setup MRQ with my personal lossless setting as usual, hit render and went to bed.
When I woke up and checked the completed render everything was as you all described, screwed up and super fast. My lightning was firing every .5 milliseconds, sky racing fast, camera speed was normal, etc. So I tried all the suggestions here and nothing fixed it except disabling TTS override and setting temporal to 1, but lacked the detail all my other shots have. So you’re talking about weeks of work on this scene suddenly crap.
Couldn’t figure it out, then i remember that I made that change to the sequence FPS late last night, (ADVANCED SETTINGS AT THE BOTTOM OF THE TAB) went back in and change it back to default 24000fps and now my TTS works fine, the override works fine like nothing happened. Even though now im back to trying to figure out the cloth issue. Maybe somehow your sequencer FPS is jacked up?
Again, I doubt this will help anyone directly given that this was obviously a self-inflicted error on my behalf, but it might jar someones memory or give you something else to try before lowering your quality standard settings just to get a render out.