- Edited
Yes there is way to roll back earlier version even it isnt very easy one but have been tried and it works fine !
Here is guide how to do it step by step :
https://steamcommunity.com/sharedfiles/filedetails/?id=2353930763
good luck !
p.s here are the depo and manifest IDs for version 8.55
https://steamdb.info/app/837380/patchnotes/
https://steamdb.info/depot/837381/history/?changeid=M:7185922987022268259