The performance of the replayer HUD and in game HUD is inconsistent.
Sometimes the replayer HUD pops up instantly, other times it can take up to 20 seconds (maybe even longer at times, but that was an observation I just made after trying it...).
In game, a similar behavior happens, where sometimes the HUD comes up right away after the first hand history is registered ... but other times it takes several hand histories or even multiple orbits before it comes up.
Have tried reinstalling older versions but keeps happening and I also tried reinstalling Windows 10, still happening.