Hello guys
Very good work clo1 !!! And to you pttn !
I wrote few words in community board about openssl 1.1 and created a patch for 16.0 you can check there in developers corner.
For faster sync I don't think is good idea to easier the miller-rabin test, we should keep it as close to 10.2 as possible, because this may lead to forks. miller-rabin is probabilistic test, so some nodes may accept the prime the others may reject, as many test is done more sure is, it will be accept by all.
GMPlib have high optimized miller-rabin test as far as I know, and I believe it will be faster than openssl, but strong tests will be needed to see if openssl and gmplib will give same result for all blocks we have by now.