Hi there, apologies for the delay. This looks like you might be running out of skin cache memory, but you should see a warning in your logs that looks like this:
OUT OF MEMORY FOR SKIN CACHE, REQUIRES XYZ extra MB (currently at XZY)
You can also view more information about the memory usage with the command r.SkinCache.PrintMemorySummary 1 which will print out the usage when out of memory, but you should try increasing r.SkinCache.SceneMemoryLimitInMB to see if that fixes the issue.
Hope this helps!