Yes, and also, don't forget to disable audio recording; I don't think it's necessary.
Regarding swf, I repeat: I recommend setting the swf with jpg compression, as shown in the attachment.
Added after 19 hours and 14 minutes
Try the following: save, for example, the animation in gif format, and during the preview before saving, you can cut out parts with the movement of monsters - why do we need to watch some zombie move; we've already seen all of that. It will simply create the effect that the monsters move instantly. It should help!
P.S. IMHO, a beautiful tactical battle should also look good visually, so that when watching, you don't have to strain your eyes, constantly rewind, frantically clicking on the spacebar so as not to miss the movement of the next stack. And as for the size... well, :smile02: 14 megabytes is not bad for relatively good quality