I had forum window opened since yesterday... now I see there is a second page

Noel, Dave, Tony,
thank you for taking a second look!
I have tried many (many!) ways, thinking it is related to audio settings or sound card or buffers. I tried internal / external interface. Asio card, Wasapi Exclusive, Asio4All. Running latencymon, disabling everything and recording in "airplane mode", recording live from computer to computer and some other weird approaches before posting here

I initially import WAVs from software arranger to DAW. They do not adhere to bars well by themselves. They start to drift after 4th bar... and I am not talking about jazz here. Silly Disco stuff that is pretty straight forward. Hopefully developer will keep his word and fixes tempo issues in his synth.
Tony, if developer fails, I think your approach is the easiest of all.
Again,
BIG thank you everybody.