With both most recent releases of BIAB 2021 (825 being the most recent), I notice a significant issue when using the woodshed increasing tempo feature.

I set up the following short loop (1 measure per chord): Am7/D7/Gm7/C7/Fmaj7. I set the initial tempo to 85, and the style to _JBSLBPD. This loop plays flawlessly. I set the woodshed tempo increment to 5. I then select the loop and "play and loop highlighted region". The playback loops and increases tempo as expected, but noise artifacts begin creeping in, resulting in a sound like a worn LP (remember those?) replete with pops and scratches. Selecting only a portion of the loop (D7/Gm7/C7) produces the same artifacts. Selecting a different style (_PROWL) also produces the same artifacts.

I find this very distracting while trying to work on tempo, which is one of my major uses for the software.