Both the two InstantAction and three PowerStruggle maps have been tested over several weeks and are optimized for competitive gamelay, but also provide a valid size for public gaming.
Quite a few of the Trusted Server Providers of Crysis have already set up multiple servers that are running the map pack. Just check them out online and enjoy the new maps!

Some examples:
• Internode Crysis #01 203.26.94.20:64087
• Internode Crysis #02 203.26.94.126:64087
• TV2 – 05 Map Pack PS 77.75.212.163:64091
• TV2 – 06 Map Pack IA 77.75.212.163:64092
• Rackage - 193.93.47.164:64087
• Rackage - 193.93.47.164:64088
• Rackage - 193.93.47.164:64089
• Rackage - 193.93.47.164:64090