This centered around the PWM functionality of ATTiny via ArduinoIDE.. let's say I have a very simple program with pinMode(0, OUTPUT);
the loop
analogWrite (0, 100);

And I'm getting huge flicker from the ATTiny. And the "Fade" example, and etc. It does handle digitalWrite fine so far. Meanwhile, the DigiSpark, on the same pin and code, runs like Arduino. From what I can tell, Arduino as ISP is working great. I followed the trail of crumbs and burned ATTiny bootloaders to run at 8mhz and 16mhz internal PLL clock, respectively. From 1 to 8mhz, the delay intervals did change noticeably. I changed the time durations even trying millis(). And it obviously sounds fairly digital via Ohmmeter.

So before I surrender and buy the mini brick of digisparks, can someone give me an idea on some different tests or workarounds? I'm tentative to dive into C if I can get away with DigiSpark.. but I'm definitely curious.

I've tried 3 ATTiny's from same batch with same result.