i have no idea how to do a logcat i can flash roms all day long but i know nothing adb commands. i can tell you the 7/22 and 7/25 builds work fine, its only the last two builds that drop the wifi
Grabbing a logcat is very easy. Open Terminal Emulator on your phone, then type the following lines:
su
logcat > /sdcard/logcat.txt
Then press you home key so you can leave the terminal running.
Once you see the wifi drop, wait for it to reconnect or do whatever you are experiencing, then long press the home key and the press the terminal icon.
Once back in terminal and your keyboard is open, hold the volume_down button and press the letter c on the keyboard to stop the logcat output.
Exit the terminal, and then you will find the logcat.txt file on your sdcard. Go to pastebin.com and copy and paste the logcat output, then post the pastebin link here.