Compressor 4.4.3 Super Slow and Crashes

Open Compressor by itself. Clear any and all batch jobs. Go to Preferences, to Advanced and click the Reset Queue button. Do a "Clear All Jobs" function. Click it again and do a "Repair Compressor" function. Reboot your Mac. I'd open Disk Utility and run a First Aid on all drives for safe measure.

If that doesn't help, I'd get the free app "FCS Remover" from DigitalRebellion.com and use it to totally remove Compressor from your system. Then open the App Store, go to Purchases and install Compressor from scratch.

Curious what kind of computer you're using? I've seen in other forums with similar issues that people are running Late 2015 iMac 5k.

I'm on a Late 1015 4GHZ 24GB Ram, M395X video card and the stupid thing is unusable. I can export out of FCPX using the "compressor setting" but I have gotten some issues in the encoding with jumpy video and such.

I am having the same issue with Compressor. It crashes the minute I start he batch. I tried everything you mentioned and I am still having the same issue.

Specs: Mac (Retina 5K, 27-inch, 2017) | 4.2ghz Intel Core i7 | 64GB RAM | Radeon Pro 580 8192 MB

Same issue here. As soon as I start batch it hangs and I have to force quit. I'm trying to process a video which is less than 1 minute and it exports from FCP with no issue in under a minute. Compressor hangs every time. Super frustrating especially when previous versions worked fine. Running a 2017 iMac 4.2Ghz i7 with 40GB ram, Radeon Pro 580 with 8GB memory. MacOS Majave v10.14.3

I have the same problem and done everything you suggested and it still doesn't work.

The problem first started on a 2014 MacBook Pro and persists on my new MacBook Pro 15inch Touch Bar 2018.