Cross disolve and video distortion and glitching.

Hello I've been having a big problem with adobe premiere elements for awhile now and don't know what to do.  On playback, the frame rate drops a lot, and flashes in different colors of green or purple. The transitions also don't work. The cross dissolve just flashes rapidly between black and the actual video instead of fading.  I tried calling the customer support, and they seemed to fix it, but upon opening the project again a few days later, the problem returned. I've also tried updating the drivers, re-installing adobe premiere elements, and changing the file type,but it hasn't worked. Exporting the video still retains the glitches and causes more blue flashing to appear. 

 I'm just using the most updated version of Premiere Elements, (Adobe Premiere ELements 2020), I filmed this on an Iphone SE, I'm using a MS-Windows system, Its an Intel (R) Core (TM) i5-7400 cpu @ 3.00GHz processor, and the graphics card is an Intel(R) HD graphics 630.

Please let me know if there's anything I can do to fix it, as its still unusable like this, thank you!

Here are some screenshots from the video.