All I can say is we've had similar issues with screen recorded material (capturing website UI's) on Mac and then importing into Premiere Pro. Images glitches appear in Premiere Pro but not in the original files when played externally.
Can't recall exactly how we resolved it ... but I think we did two things. Used different screen recording software - which I believe was Uniconverter - it has a screen recording function built in.
As I recall that worked but due to another workflow issue we ended up screen recording using a Windows PC and that resulted in perfect files that played in Premiere Pro (Mac version). Sorry the details are a bit vague and I don't have more info.
Bottom line - try an alternate screen recording software.