After replacing my screen I have had ghosting problems

So several months ago I had dropped my onePlus one and cracked my screen loosing all touch capabilities on the bottom 2/3 of the screen. After getting by using a microUSB mouse I decided the best solution for me was to fixit my self thanks to this website. I was able to successfully replace the screen and didn't have any problems with my phone for several months. However, over the past 2 months it has began to have a very annoying Ghosting problem that seems to come and go but has gotten bad enough I have had to apologize for phone calls I didn't make and delete pictures I didn't take. From my research and experience on the issue I'm still uncertain if this is a hardware or software issue. It does seem to be worse if my phone is hot from intense use or very visually intense apps but that is the only clear connection I have seen. Any advice on how to resolve or troubleshoot the issue is welcome and appreciated. Thanks for you help.