Indeed one can workaround it relatively good ...
In 70-75% of the battles I die naturally (around 50% loose + 50% die in won battles) ... so I quit to garage b4 the problem happens - that saves 3 of 4 battles ...
For the rest 25%, if I carefully put on all camo and national emblems on the tank i play in that session, it rarely hangs...
And it never hangs with 2d/3d styles on the played tank ...
So yesterday, I played around 2-3 hours with only one hang.
What is not fixed by that workarounding ... is the hangs directly on startup of wot ... which also speaks against memory leak - i get those hangs mostly at the start of my sessions in the first few rounds.
Btw. memory leak would potentially take quite long to fill 32 gb ram ... mostly thats idle.
And btw. the relative success of that workarounds point in my idea still towards auxilium auto camo as root cause ... since that update as i posted the issue started 4 me. And it seems to me that it mostly hangs with me on tanks, where auto camo doesnt manage to restore camo and national emblems (that seem still buggy - once it works, once not). Might bei coincidence, might be still buggy.