I think that was only for BSOD case.
I will try that.
Edit:
-> USBBlaster.setOutEpSize(60);
Didn't do autodetect in programmer. Hangs
-> USBBlaster.setOutEpSize(64);
Works ok and also 2k sample 16kbit capture seems work with original drivers.
Edit2:
16kbit data offload takes 16s but it works. So don't do any big captures.
Edit3:
Did some test with DE0-Nano. 4 signal 32k depth (128kbit). Whole capture was about 1.5s
So if I need to debug something in HW then I use real braster.
Also remember to use testbench and simulate.