Lag and map issues

I've been noticing a few issues during battle today:

1 - 5 to10 seconds of lag at the beginning. It allows me to give orders to my units (plants destination flag and shows movement line) but the units don't move for a period of time.

2 - The minimap seems to be randomly either see-through (showing unit locations, but also the ground behind the map), monochrome (showing unit locations on a flat green minimap) or the normal minimap showing unit locations and other features.

3 - Only seen this one once (arrow bar and status bar from world map):


None of these have really effected gameplay yet.

Cheers!

Update:
Also had an instance where, after clicking join game for a co-op, the city screen stayed up. After a reload I rejoined the co-op properly, but not before the AI had taken over my troops.