Playtime: Starting REAPER playback may turn audio clip silent when having high-PDC-latency FX in the signal flow #1156
Description
Can easily be tested by putting ReaFir on the master track with a huge FFT size (e.g. 32768).
Cause: The default tempo buffer gets too low, so there are tempo buffer future-lookup misses.
Fix: Make the tempo buffer size increase dynamically depending on the current maximum PDC read-ahead.
Branched out from #1127.