You may specify SWF movie quality by selecting from Low and High values (this option is similar to the one of standard Adobe Flash player). The advantage of low quality mode is that it reduces CPU load and playback becomes very smooth. But on the other hand it essentially decreases movie display quality.
After applying the value you’ve chosen, it will be selected automatically when the movie is played.
This option is available from Player’s menu –> Movie. You may also set SWF movie quality in Preferences (choose “Default quality of SWF files playback” option).