The old Unity (version 2017) had issues that would crash at seemingly random moments – it was a huge pain. After tolerating that issue for long enough, I decided to bite the bullet and switch to Unity 2019. At this moment I am in the process of migrating assets and code because of that switch. It’s a tedious task but it’s not like I have a choice. Meanwhile, check out the recently migrated sheep (running smoothly in the new version of Unity so far)!