LG G3 :: Unable To Consistently Receive Group Messages From IPhone Users

I recently switched from an iphone 4 to an LG G3 and have been unable to consistently receive group messages from iphone users. Sometimes messages will come through, but about 95% of the time I do not receive them; however, the people in my group do receive my messages. I am aware that this is a common issue among Android users, and I have read about it extensively online for weeks now, but I still have not come up with a solution. I have tried using multiple different messaging apps including the default messaging app, chomp sms, textra, hangouts, etc. I have also turned off imessages on my old phone, typed in the code for Apples "unsubscribe" from imessage thing, and texted STOP to the number to disable imessages.

I am running the latest version of Android. I also replaced my old SIM but still no luck. MMS group message settings are all enabled on my phone too. I didn't see a post about this in regards to the LG G3 specifically so I decided to make one. I have heard suggestions of people saying to tell your iphone friends to adjust settings on their phones, but I wanted to find a solution without having to tell all of my friends to mess with their settings to accommodate me. I absolutely love everything about my new android phone after making the switch from Apple, but this one problem is seemingly large that I hope it doesn't force me to go back to an iphone.