Stats for update 7.2 have been added.
Record 205M battles by 456k players was recorded in the database. Please note, these are note all the WoT Blitz players, just those tracked by BlitzAnalysiz().
There seem to be more low-tier stat-padders captured in the database since Top 5 highest WR tanks are Tier V or below.
loess()not being thread-safe in multi-core applications.
library('RhcpBLASctl'); blas_set_num_threads(1)took care of it. It took probably 50h to debug it. Debugging parallel code is PIA. Finally solved it! By definition, bugs are found in the last place you are looking for those.