Unexpected game behaviour due to Quality

[Konradix]

I just loaded the designer and tested my level a few times on Low quality. The result? Yuck, lags everywhere, long loading time etc. Then a flash problem happened so I restarted the designer. I started testing again and this time - the level was playable. It didn't have the lag I got before whenever an enemy appeared on the screen. Ran at 27-30 fps nearly all the time. Anyone knows why this happens?

[Konradix]

Soo... no replies

[Harmless]

I thought I replied to this earlier... whoops.

I'm not sure why, actually. Does the problem persist?

[Konradix]

Well, to be honest it's not a problem. I just wanted to know it's an anomaly or does lower quality actually increase lag on levels, because I've always tested on Low quality, assuming lowering the graphics quality would increase the performance of the game/level (and I assume that since every other game does that). I'll try it on other levels.