Used Benzyme LF on a 6 kg wheated bourbon mash and it worked really well. I held the mash around 90°C for about 2 hours, then followed it up with Benzyme TG for the saccharification stage. After the enzymes had done their thing, an iodine test showed no remaining starch.
I used about 3 mL, which was definitely on the generous side considering the recommended dosage is only around 0.7 to 1.2 mL for 6 kg even when calculating against the full grain weight. So you don't need much of this stuff.
It handled the 90°C mash without any issues and did a great job of breaking down the starch and reducing the mash to something much more manageable. Combined with the TG, the two enzymes worked really well together.
Really happy with the results and I'll definitely be using it again.