Imac, late 2013, video display hang up, lines, video drop outs. On iMac 21.5, late 2013 model.

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iMac diagnostic reports "no issues found" (Code ADP000). Video is unusable most of the time. This happened soon after I installed 1Password7. Has the recent upgrade to 1Password 7 caused any video problems?

1Password Version: Not Provided
Extension Version: Not Provided
OS Version: Not Provided
Sync Type: Not Provided
Referrer: forum-search:imac video display problem


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