Changing the safety buffer size (256) helped for me.
I still get overloads, just not as frequent.
Submitted bug report with Apple via ADC (several months ago). So far no confirmed fix and they can't replicate the problem or will not buy the hardware necessary to replicate.
BUT, the real bottom line, same Mac, same Audio interface, same OS, LP7 works with ZERO overloads, LP8 gets overloads. I honestly don't know how anyone could think this is not a problem with LP8? It's the ONLY thing different.
Boggles my mind this problem still exists even with all the latest updates...which usually indicates this issue is VERY difficult to reproduce which probably means it's a thread timing problem and those are difficult to diagnose even when you introduce trace code as the trace code itself introduce timing adjustments which can in turn prevent the problem from happening.
I'm disappointed the LP8 dev team have not solved this yet, but I do sympathize with the type of problem they're up against. And, even if they have discovered how to replicate in an environment they can work in to fix, then the solution could also be so deep in the core audio engine that any adjustments could require considerably more testing.
I'm not bashing Apple, because I feel they are still the best software company in the world. But the standard isn't high at Microsoft so not sure if that is saying too much.
As with others, I still have hopes they dev team will fix LP8 some day.