Is not like is well "optimized" it have some dips even on good hardware still is the best sim heli you can get apart of the one from MS flight sim and DCS which those have superior physics nonetheless Take on Heli is pretty good
I see Early Access as a workaround for DRM stuff, some games got cracked day 1, but have shit tons of bug, a lot of scene groups don't do updates to their release, forcing people to play bugged version.
if you want a good Helicopter sim, go and take a look at "Take on helicopter"
remember kids always put a trophy system on.