I take the absence of any updates to mean all is working well, then. This certainly sounds congruent with my experience (mismatched buffers yielding issues).
The biggest issue I ever dealt with (which has been fixed in OB2) was the fact that a host’s (Ableton’s) buffer higher than 512 samples would cause the entire program to crash. Now it simply does nothing.
Extended anecdote for humor: The first thing I did upon purchasing the Rytm MK1 was to create a default template with all streams of audio routed to separate channels and grouped, etc. This, paired with the aforementioned phenomena led to a maddening stint of hours at a later date where Ableton would repeatedly crash upon booting (the default template) due to retaining the sample buffer of the last session.
A word of sage advice: If anyone reading this insists on using OB 1.15 in Live, and would like to set up a default template, make damn sure you set Overbridge to inactive before saving the template to allow you to adjust the buffer setting upon booting, lest it be changed to a larger size and closed without thinking.